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Insolvency Companies in London: 100+ Active Firms (2026)
Insolvency and restructuring companies in London manage statutory appointments, rescue processes and creditor-led wind-downs across the capital.
Demand tends to originate in three buying centres: company directors seeking rescue advice, lenders protecting secured positions, and creditors or professional advisers pushing for an orderly wind-down. London practices usually sell to owner-managed businesses, mid-market groups and financial-services counterparties rather than consumers, with work routed through accountants, lawyers and banking contacts. Engagements range from short diagnostic advice to appointment-led mandates covering creditor communications, asset realisation and statutory reporting. The commercial centre of gravity is professional services rather than software or balance-sheet risk: firms need licensed practitioners, case administration capacity and the controls to handle regulated appointments.
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London has 101 actively trading insolvency and restructuring firms in this list, a compact market by company count but one with specialist regulatory capacity. The employment footprint is visible across the full reporting cohort: 51 of 51 firms report headcount, together accounting for 311 roles. That points to a practitioner-heavy service market rather than a volume employer, with case teams sized around appointments, creditor meetings, compliance reviews and asset recovery work. The limited number of firms above larger turnover thresholds suggests that high-value mandates exist, but much of the market remains in small professional practices.
Statutory appointments give this market a narrower boundary than general turnaround consultancy. GOV.UK states that only a licensed insolvency practitioner can act as liquidator, administrator, administrative receiver, nominee or supervisor of a company voluntary arrangement, or as monitor of a company moratorium. Authorisation sits with recognised professional bodies, while the Insolvency Service oversees the regime in Great Britain for the Secretary of State. The practical effect is that London firms compete on referral trust, practitioner availability and case administration discipline, not just advisory judgement. The Insolvency Act and the Corporate Insolvency and Governance Act frame much of the work.
Growth appears likely to come less from new incorporations and more from caseload mix, referral depth and the ability to staff regulated appointments without losing control of compliance. Smaller practices tend to remain dependent on accountants, lawyers and lender introductions, while larger operators can absorb more complex administrations and creditor-heavy work. Technology may standardise document handling and creditor communication, but the constraint is still licensed judgement. Consolidation is plausible where succession, professional indemnity costs or regulatory supervision make subscale ownership less attractive, though the market is unlikely to behave like a venture-backed services category.
101
Active firms
2026
4
£5M+ turnover
reported turnover threshold
6
New incorporations
since 2022
Key facts
About 3% of the trading cohort reports turnover above £5M (4 of 101 firms) — the rest sits below that revenue band.
5% of the cohort was incorporated since 2022 (6 firms), so a sizeable share is in its first few filing cycles.
Statutory appointments such as liquidator, administrator, administrative receiver and company voluntary arrangement supervisor are reserved to licensed Insolvency Practitioners.
Practitioners are authorised by Recognised Professional Bodies, with the Insolvency Service acting as oversight regulator in Great Britain on behalf of the Secretary of State.
The main statutory frame is the Insolvency Act 1986, with company-rescue measures added under the Corporate Insolvency and Governance Act 2020.
England and Wales recorded 23,872 registered company insolvencies in 2024, 5% lower than 2023 but still near 2008-09 recession levels.
Western European corporate insolvencies rose by 12.2% to 190,449 cases in 2024, while declines were recorded only in Denmark and the United Kingdom.
Top London insolvency companies
MOORFIELDS ADVISORY NORTH LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides business recovery, insolvency and restructuring services to companies and individuals, including administration, liquidations, and company voluntary arrangements. Also offers financial…
Serves businesses, directors, lenders, creditors and property stakeholders facing financial distress or change, across sectors including real estate, construction, manufacturing, healthcare, retail,…
Financial Health
HealthyHealthy · Hiring · 71% CAGR over 2y
Location
RAKSNIM LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides corporate insolvency and restructuring services, including administration, liquidations, receiverships and voluntary arrangements. Also offers financial advisory, debt solutions, asset…
Serves UK businesses, company directors, lenders, accountancy practices, law firms, stakeholders and public-sector bodies across sectors including property, retail, manufacturing, healthcare,…
Financial Health
StableStable · -68% CAGR over 4y
Location
Panos Eliades Callender & Co Ltd
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsAdvises businesses and individuals on insolvency matters, including corporate liquidations, administrations, CVAs and receiverships. Assists with personal insolvency such as individual voluntary…
Serves businesses, company directors, partnerships, creditors and individuals facing insolvency, alongside accountants, solicitors and financial institutions seeking support for their clients.
Financial Health
StrongStrong · Growing, Hiring · 7% CAGR over 2y
Location
Grant Thornton
Provides audit and assurance, tax, and advisory services to businesses, financial institutions, and public sector organisations. Services include corporate finance, restructuring and insolvency, risk…
Serves B2B and public-sector clients, including privately held businesses, public interest entities, government bodies and organisations in financial services, consumer markets, energy,…
Location
RG INSOLVENCY LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides insolvency and restructuring services for companies and individuals, including administration, creditors’ and members’ voluntary liquidations, company and individual voluntary arrangements,…
Serves UK business stakeholders including directors, creditors, debtors, lenders and shareholders, as well as individuals facing personal financial difficulties.
Financial Health
HealthyHealthy · Hiring · 15% CAGR over 4y
Location
Provides accounting, audit and assurance, tax advisory, corporate finance, risk and regulatory consulting, restructuring, forensic accounting, digital, and business outsourcing services. Advises…
Serves businesses from startup to exit, entrepreneurs, business owners, families and individuals, plus charities, public sector bodies and sectors including financial services, fintech, hospitality,…
Location
FROST GROUP LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides insolvency and restructuring services for businesses and individuals, including administration, creditors’ voluntary liquidation, company voluntary arrangements, and business recovery…
Serves UK businesses, directors, shareholders, partnerships, creditors and individuals facing insolvency, debt, HMRC arrears or commercial disputes, including professional services firms such as…
Financial Health
WeakWeak · -67% CAGR over 4y
Location
Trajectory
2y · 2023–NowFinancial sub-scores
Computed from 2 filingsProvides business restructuring and insolvency advisory services to companies, individuals and stakeholders. Supports financial distress situations through administrations, company and individual…
Serves businesses in financial distress or underperformance and their stakeholders, including shareholders, lenders, management teams, directors and creditors, plus individuals facing personal…
Financial Health
WeakWeak · 0% CAGR over 1y
Location
VOLUNTARY LIQUIDATION LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides corporate and personal insolvency services, including creditors’ and members’ voluntary liquidations, company administration, company voluntary arrangements, pre-pack administrations, and…
Serves financially distressed small businesses, company directors, sole traders and individuals, plus accountants, solicitors and financial advisers supporting clients across sectors such as retail,…
Financial Health
HealthyHealthy · 0% CAGR over 4y
Location
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides chartered accountancy and business advisory services including audit, tax planning and compliance, accounting, consulting, insolvency and restructuring, plus personal tax services and…
Serves businesses operating in the UK, private clients and trusts, insolvency and restructuring stakeholders, international property investors, and alternative investment funds.
Financial Health
DistressedDistressed · -61% CAGR over 4y
Location
Parker Getty Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides insolvency and restructuring services for businesses and individuals, including company liquidation, administration, company voluntary arrangements (CVAs), business advisory, creditor…
Serves businesses and company directors facing financial distress, as well as individuals and partnerships needing debt advice. Also sells to creditors seeking support in insolvency cases and…
Financial Health
StrongStrong · Hiring · 9% CAGR over 4y
Location
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsProvides business restructuring and insolvency services including administration, turnaround advice and liquidation support (CVLs and MVLs). Also offers property surveying and advisory services and…
Serves businesses facing financial distress or closure, including company owners and directors, plus banks, accountants, creditors, and property investors, managers and developers needing advisory…
Financial Health
StableStable · 0% CAGR over 1y
Location
TRADEPAT INTERNATIONAL LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides audit, tax and accounting services alongside business advisory, corporate finance, risk management, insolvency and forensic accounting support to businesses, operating as part of an…
Serves growing businesses and organisations worldwide, including corporates across financial services, technology, healthcare, real estate, retail and transport, plus charities, public sector bodies…
Financial Health
HealthyHealthy · 0% CAGR over 4y
Location
Cornerstone Business Turnaround And Recovery Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides insolvency and business recovery services, including company administrations, voluntary liquidations, restructuring advice, individual voluntary arrangements, bankruptcy guidance, and…
Serves financially distressed sole traders, partnerships, LLPs, companies, family businesses, public bodies and individuals needing insolvency, restructuring or debt-related advice across business…
Financial Health
StrongStrong · Hiring · 18% CAGR over 2y
Location
Grant Thornton Agile Talent Solutions
Provides professional services including audit and assurance, tax advisory, corporate finance, restructuring, risk and forensic investigations, cyber security, ESG advisory, and business consulting…
Serves privately held businesses, public interest entities and public sector organisations across sectors including financial services, consumer markets, energy, transport, government, real estate,…
Location
Grant Thornton UK
Provides audit and assurance, tax, and advisory services to businesses, public sector organisations, and financial institutions. Offers consulting in areas such as corporate finance, restructuring,…
Serves privately held businesses, public interest entities and public sector organisations across sectors including financial services, government, consumer markets, energy, real estate, automotive…
Location
Buchler Phillips Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides corporate recovery, insolvency administration, turnaround and restructuring advisory services for businesses and individuals. Also conducts forensic and fraud investigations, offers expert…
Serves global corporations, SMEs and individuals facing financial or operational challenges across property, financial services, leisure, manufacturing, logistics, retail, technology, media,…
Financial Health
StrongStrong · -3% CAGR over 4y
Location
LA BUSINESS RECOVERY LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides insolvency and business recovery services, advising companies, directors and individuals facing financial distress. Handles members’ and creditors’ voluntary liquidations, company and…
Serves company directors, businesses and individuals facing financial difficulty, as well as creditors needing guidance on insolvency procedures and related debt or restructuring matters.
Financial Health
StableStable · Hiring · 6% CAGR over 4y
Location
Provides strategic advisory and consulting services to corporate leaders, including financial advisory, restructuring and insolvency support, management consulting, executive search, risk and…
Serves CEOs, boards, senior executives and investors at large and multinational organisations across sectors, including businesses facing corporate, financial, reputational, risk, governance and…
Location
Voscap Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides insolvency and business recovery services to companies, including restructuring advice, turnaround management, creditor representation, and guidance on insolvency procedures and business…
Serves business owners, directors and creditors facing financial distress, insolvency or closure, across e-commerce, tech startups, healthcare, construction, tourism and professional services.
Financial Health
StrongStrong · Growing, Hiring · 44% CAGR over 4y
Location
FRP Advisory
Provides corporate finance, debt advisory, restructuring, and forensic services to businesses. Advises on mergers and acquisitions, capital raising, insolvency, financial modelling, valuations,…
Serves businesses at all stages of the corporate lifecycle, plus boards, C-suite teams, lenders, creditors and private equity investors across sectors including retail, construction, fintech,…
Location
FRP Advisory
Provides corporate finance, restructuring, debt and financial advisory services, including mergers and acquisitions, capital raising, insolvency support, forensic investigations, valuations,…
Serves businesses, boards and C-suite teams, lenders, creditors and private equity investors facing corporate lifecycle events, with sector focus including retail, construction, fintech,…
Location
FRP Advisory
Trajectory
2y · 2019–NowFinancial sub-scores
Computed from 2 filingsProvides corporate finance, restructuring, debt advisory and forensic accounting services to businesses. Advises on mergers and acquisitions, capital raising, valuations, financial modelling,…
Serves businesses and their owners, boards and C-suite teams, private equity investors, lenders and creditors across retail, construction, fintech, manufacturing, leisure and hospitality.
Financial Health
WeakWeak
Location
BEAVIS MORGAN SUBCO LIMITED
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsProvides chartered accountancy and business advisory services including audit, tax planning, corporate finance, restructuring and estate planning. Also offers outsourced finance functions such as…
Serves businesses and private clients in London, including entrepreneurial and owner-managed companies, high-net-worth individuals, landed estates, and sectors such as real estate, hospitality,…
Financial Health
StableStable · 0% CAGR over 0y
Location
Moore Kingston Smith & Partners LLP
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides accountancy and business advisory services including audit, tax planning, corporate finance, payroll, outsourced accounting, restructuring, forensic accounting and valuation, alongside HR,…
Serves businesses, nonprofits and private individuals, including owner-managed firms, family businesses and large corporates across sectors such as charities, education, financial services,…
Financial Health
WeakWeak · -2% CAGR over 4y
Location
HUDSON WEIR LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides insolvency and business recovery services, advising companies and individuals on debt and financial distress. Services include company liquidation, administration, company voluntary…
Serves directors and owners of financially distressed businesses facing creditor pressure, HMRC debts, winding-up petitions or closure, as well as individuals seeking personal debt support.
Financial Health
WeakWeak · -10% CAGR over 4y
Location
Provides audit, accounting, tax advisory and business consulting services to companies and organisations. Services include assurance, tax planning and compliance, risk advisory, deal and corporate…
Serves mid-market business leaders and organisations across sectors, including real estate and consumer markets, with a B2B client base in the UK and internationally.
Location
FRP Advisory
Provides corporate finance, restructuring and financial advisory services to businesses, including mergers and acquisitions advice, capital raising, debt advisory, forensic investigations,…
Serves businesses and their senior decision-makers, including boards, C-suite teams, lenders, creditors, investors and business owners, across the corporate lifecycle. Targets sectors including…
Location
COMPANY DEBT LTD
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides insolvency advice and services to company directors, including company liquidation, creditors’ and members’ voluntary liquidation, company administration, company voluntary arrangements, and…
Serves UK SME directors and limited company owners facing company debt, insolvency, liquidation, tax arrears, winding-up petitions or business closure decisions.
Financial Health
HealthyHealthy · 0% CAGR over 2y
Location
Provides management consulting, turnaround and restructuring advisory, performance improvement, corporate finance, and transaction advisory services to corporations, private equity firms, and public…
Location
FWJ (Director) Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides legal services to businesses, directors and shareholders, specialising in director disqualification defence, commercial and shareholder disputes, insolvency and company rescue matters, and…
Serves SMEs, company directors, shareholders and business creditors seeking legal support in disputes, insolvency, debt recovery, director disqualification and shareholder matters.
Financial Health
StableStable · 0% CAGR over 4y
Location
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides chartered accounting and financial advisory services including audit, accounts preparation, tax planning, restructuring and insolvency support, probate assistance, and corporate finance and…
Serves UK businesses, company directors, accountants, finance directors, creditors, partnerships, sole traders and individuals, with clients in sectors including leisure, hospitality, retail and…
Financial Health
DistressedDistressed · 0% CAGR over 4y
Location
SELF MADE FILMS LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides consultancy and legal support in insolvency, business rescue, and commercial debt recovery. Advises creditors, company directors, and investors on administration, liquidation, statutory…
Serves creditors, company directors and investors facing business insolvency, financial distress, unpaid commercial debts, recovery risk or personal exposure from failed or failing companies.
Financial Health
StableStable
Location
Provides financial advisory and restructuring services to businesses, investors and stakeholders, including transaction support, deals advisory, turnaround and insolvency-related services, helping…
Serves businesses, investors and other stakeholders facing challenge or opportunity, across sectors and geographies, including organisations involved in transactions, performance issues or…
Location
Provides business advisory and consulting services including risk and compliance, cybersecurity and data privacy, forensic investigations, disputes and litigation support, financial advisory,…
Serves governments, large businesses and institutions across sectors including financial services, healthcare, energy, construction, manufacturing, technology, real estate and transport.
Location
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides accounting, audit, tax advisory and consulting services to businesses; personal and trust tax services to private clients; and insolvency and restructuring support, including specialist UK…
Serves UK businesses, private clients and trusts, distressed companies and stakeholders, plus international property investors and alternative investment funds with UK real estate interests.
Financial Health
StableStable
Location
CMIS Independent Financial Advisors Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides accountancy and business advisory services including audit, tax planning, corporate finance, outsourced accounting, payroll, financial planning, restructuring and insolvency advice, HR…
Serves commercial and nonprofit organisations, owner-managed and large corporate businesses, family businesses, professional firms and private clients across sectors including charities, education,…
Financial Health
StrongStrong · Hiring · 3% CAGR over 4y
Location
Provides chartered accountancy and business advisory services including audit and assurance, corporate tax and VAT advice, corporate finance, cloud accounting, payroll, financial planning, and…
Serves businesses and organisations needing accounting and advisory support, including owner-managed companies, FCA-regulated firms, schools, charities, healthcare providers, manufacturers, property…
Location
Provides management consulting services to businesses, advising on performance improvement, restructuring, digital transformation, risk management and corporate turnaround. Works with organisations…
Serves senior executives, boards and leadership teams at mid-market and large businesses across industries facing disruption, growth, transformation or critical operational challenges.
Location
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides chartered accountancy and business advisory services including audit, tax planning, accounting, consulting, and insolvency support. Also delivers personal and trust tax services, and…
Serves UK businesses, company owners and finance teams, private clients and trusts, distressed businesses and creditors, plus international investors and alternative investment funds with UK real…
Financial Health
DistressedDistressed · -70% CAGR over 4y
Location
AAB UK Limited
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides accounting and professional advisory services including audit and assurance, tax compliance and planning, payroll, corporate finance, restructuring and insolvency, HR consulting, and…
Serves businesses and organisations needing audit, tax, payroll, HR, restructuring and advisory support, plus private clients and high net worth individuals. Targets sectors including construction,…
Financial Health
WeakWeak · -8% CAGR over 4y
Location
THE EDUCATION ADVISORY SERVICE LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides financial restructuring and advisory services to education institutions, including independent schools, academies and colleges. Supports mergers and acquisitions, insolvency processes,…
Serves UK education institutions in financial distress, including independent schools, academies, higher and further education providers, and early years settings, targeting headteachers, governors,…
Financial Health
StrongStrong
Location
Allen Thornton Springer Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides chartered accountancy and business advisory services, including audit, bookkeeping, accounts preparation, payroll, VAT and corporate tax planning. Also advises on company formation, mergers…
Serves businesses and individuals needing accountancy and financial advice, including sole traders, partnerships, limited companies, startups and growing firms. Also targets sector-specific clients…
Financial Health
DistressedDistressed
Location
Nordens Farringdon Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides chartered accountancy and business advisory services including tax planning and compliance, audit and assurance, payroll, VAT returns, company secretarial support, cloud accounting,…
Serves businesses, especially ambitious business owners and SMEs seeking accountancy and advisory support. Targets sectors including construction, professional services, property, recruitment,…
Financial Health
DistressedDistressed · -16% CAGR over 4y
Location
Provides financial and risk advisory services including valuation, transaction and fairness opinions, cyber risk consulting, investigations, compliance support, and data analytics. Advises…
Serves large enterprises, private equity and private credit investors, financial institutions and corporate deal teams across global markets.
Location
NUMERA PROPERTY CONSULTANTS LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides chartered accountancy services including audit, financial accounts preparation, bookkeeping, payroll, VAT and tax planning. Advises businesses and individuals on business start-ups,…
Serves sole traders, high-net-worth individuals, family-run businesses, limited companies and international groups across varied industries.
Financial Health
StableStable
Location
SCF WESTERN INTERNATIONAL LLP
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides accountancy and advisory services for businesses and individuals, including audit, tax and VAT planning, payroll and bookkeeping, company formation and secretarial support, corporate finance…
Serves businesses and private individuals needing accountancy, tax and financial planning support, including startups, owner-managed companies and IT or other contractors requiring IR35-related…
Financial Health
StrongStrong
Location
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides accounting and financial management services for businesses, including bookkeeping, payroll, statutory accounts, corporation tax compliance, and company secretarial work. Also offers…
Serves UK growing businesses, entrepreneurs, franchise owners, contractors and logistics professionals, with sector focus including freight forwarding, construction, e-commerce, real estate, startups…
Financial Health
StrongStrong · Growing, Hiring · 4% CAGR over 3y
Location
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How London insolvency companies work and how to sell to them
What they do
Revenue usually comes from advisory fees before distress becomes formal, then appointment-led work once a liquidation, administration, voluntary arrangement or moratorium is under way. Smaller matters may start with fixed-fee reviews or short director consultations; larger mandates are usually time-costed and linked to case administration, creditor communication, asset realisation and statutory reporting. The service shape is labour-intensive professional work rather than a repeat subscription product. Capacity sits in licensed practitioners, case managers and back-office controls, with margin affected by recoverable fees, case complexity, document volume and the speed at which assets can be identified, secured and realised.
Who they sell to
Buyers are usually company directors, finance directors, lenders, creditors and the advisers around them. Accountants and lawyers often act as the route into a mandate, so referral trust can matter as much as direct prospecting. Distressed situations shorten the sales cycle: some engagements move from first conversation to appointment within days, while lender-led or creditor-heavy matters can require panel checks, conflict reviews and formal approval. Most purchasing is relationship-led rather than self-serve. Decision-makers tend to care about practitioner availability, sector familiarity, fee recovery, creditor handling and whether the firm can manage a difficult process without creating further regulatory or reputational risk.
What they buy
Most insolvency practices tend to spend on tools and services that reduce case administration friction. Common categories include case-management software, secure document storage, creditor-communication systems, time recording, billing, compliance workflow, identity checks, audit trails and management reporting. Marketing spend is usually referral-oriented, with search visibility and professional-network content supporting accountant, lawyer and lender introductions. They may also buy legal support, valuation services, asset disposal support, forensic accounting, cyber security, professional indemnity advice, recruitment and training. For larger practices, integration between finance, document handling and statutory reporting is often more persuasive than generic productivity claims.
Why and how to sell to them
Insolvency buyers tend to evaluate suppliers when caseloads rise, new licensed practitioners join, case teams are added, or compliance pressure makes manual administration harder to defend. Succession planning, consolidation and professional indemnity cost reviews can also prompt supplier changes. Outbound works better when it is framed around appointment control, recoverable time, creditor transparency, audit evidence and fewer hand-offs between advisers, rather than broad efficiency language. Useful signals include new restructuring hires, expanded creditor-services capacity, lender-panel activity, website changes around company rescue work, and visible emphasis on administrations or voluntary arrangements rather than only routine liquidations.
How this list is built
Data sources
This list is built from UK Companies House filings, XBRL accounts data, and semantic analysis of each company's public website. Revenue and headcount figures come from the most recent filed accounts; where the company has not filed, values are estimated using a model trained on filed history and peer benchmarks and are labelled as estimates.
Classification
Rather than relying solely on SIC codes, Firmbase classifies each company semantically: the company's website is crawled, an AI model reads what the company actually sells, and the company is placed into the relevant industry and subsectors. SIC codes are used as one signal but not the only one. This means a company that registered under a generic SIC code but pivoted into (for example) fintech is correctly identified as fintech, not as its original SIC category.
Freshness
The underlying company data is refreshed from Companies House continuously; filings appear in the list within days of submission. The curated list ordering is regenerated when the underlying data moves meaningfully (company count changes by more than 5%, a new company enters the top-ranked segment, or the filed-revenue numbers for the top firms change). You can see the last-updated timestamp near the top of the page.
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