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Consulting Companies in Portsmouth: 2,131 Active Firms (2026)
Management consulting companies advise organisations on strategy, operations and transformation across Portsmouth and its surrounding metropolitan area.
Buying centres are usually the chief executive, finance director, operations director or transformation office, rather than a single software or procurement function. Demand tends to sit around strategy reviews, operating-model design, process improvement, cost control, change delivery and programme assurance. The customer base spans owner-managed businesses, mid-market groups, local institutions and public-sector bodies that want external analysis without permanently hiring a large internal team. Engagements often begin as scoped diagnostic or planning projects, then expand into delivery support where the client lacks capacity, specialist methods or an independent view.
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Portsmouth’s consulting market contains 2,131 actively trading companies, a sizeable local advisory base rather than a narrow cluster of scale practices. Reported employment totals 583 people, which leaves the visible workforce looking relatively small against the breadth of the corporate population. The shape is consistent with a professional-services market led by owner-managed advisory businesses, contractors operating through limited companies, and smaller practices that can attach specialist capacity to larger client teams. Buyers are likely to encounter breadth before depth: plenty of local choice, but fewer providers with the apparent scale for complex, multi-workstream mandates.
Management consulting does not sit under a dedicated sector regulator, so market structure is shaped more by client requirements than by licensing. Public-sector and institutional buyers tend to impose procurement rules, audit trails, information-security checks and conflict-of-interest controls before work begins. Private-sector clients usually focus on professional liability cover, confidentiality, demonstrable sector knowledge and the consultant’s ability to work alongside internal teams. For Portsmouth practices, proximity to local employers and public bodies may help with relationship-led selling, but tendering discipline and evidence of delivery remain important in formal buying processes.
Growth prospects appear tied less to generic strategy work and more to practical delivery: cost reduction, operating-model repair, supplier change, technology adoption and project recovery. The cohort looks weighted towards smaller practices, which tends to keep pricing competitive and makes specialist positioning important. Scale-up scarcity may also encourage partnerships, associate networks and referral arrangements rather than formal consolidation. Client scrutiny has been rising around value for money, conflicts and evidence of implementation, so firms that can show repeatable methods without sounding formulaic are likely to be easier for buyers to evaluate.
2,131
Active firms
2026
6
Above £5M
firms by revenue
457
Since 2022
new incorporations
Key facts
About 1% of the trading cohort reports turnover above £5M (6 of 2,131 firms) — the rest sits below that revenue band.
21% of the cohort was incorporated since 2022 (457 firms), so a sizeable share is in its first few filing cycles.
Management consulting firms around Portsmouth typically sell advisory work across strategy, operations and transformation, often through project-based engagements.
The local market appears to include both boutique consultancies and advisory vehicles with limited payroll, so headcount alone can understate commercial activity.
Portsmouth and its surrounding metropolitan area give buyers a local supplier base for account mapping, procurement checks and competitor screening.
Top Portsmouth Consulting companies
SIRIUS ANALYSIS LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides technical and management consultancy services including operational analysis, cost engineering, systems engineering, programme and project management (P3M), and business case development.…
Serves UK public-sector bodies and large organisations in defence, energy and sustainability, nuclear, space and transport, including government programme teams making major investment and…
Financial Health
StrongStrong · Hiring · 108% CAGR over 4y
Location
ECHELON BUSINESS MANAGEMENT LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides business consulting focused on organisational change and performance improvement. Services include M&A due diligence and integration, sales effectiveness audits, operational optimisation,…
Serves businesses and executive teams undergoing growth, M&A or operational change, particularly those needing sales, HR or leadership support. Also works with a small number of endurance sport…
Financial Health
WeakWeak · 0% CAGR over 4y
Location
IBD Solutions Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides export and business development services for food manufacturers, helping brands expand into international retail markets. Offers market analysis, partner matchmaking, sales representation,…
Serves SME European food manufacturers and suppliers seeking international retail partnerships, especially brands expanding into markets across Europe and the USA.
Financial Health
WeakWeak · Hiring · 4% CAGR over 4y
Location
Sillion Quant Ltd
Trajectory
2y · 2023–NowFinancial sub-scores
Computed from 2 filingsProvides strategic communications advisory services focused on energy transition and sustainability sectors. Advises leadership teams on narrative development, stakeholder positioning, communications…
Serves B2B leadership teams at UK listed businesses, global NGOs, large private companies, scale-ups, asset managers and funds where energy transition or sustainability affects investors, regulators,…
Financial Health
StableStable
Location
Gattica Limited
Trajectory
4y · 2023–NowFinancial sub-scores
Computed from 4 filingsProvides utility infrastructure consultancy, offering management and design services for development and transport projects. Supports regeneration, land development, highways, rail and civil…
Sells to B2B clients in UK regeneration, land development, highways, rail and civil engineering projects, including developers, infrastructure owners, consultants and contractors involved in major…
Financial Health
StableStable
Location
STAR RECOVERY TEAM LTD
Trajectory
1y · 2024–NowProvides research and consultancy on addiction and recovery services. Conducts needs assessments, analyses recovery capital, and develops recovery‑focused frameworks and organisational models for…
Serves recovery organisations, addiction and rehabilitation services, NHS and private-sector providers, and community groups developing recovery-focused models and frameworks.
Financial Health
Insufficient historyInsufficient history
Location
Trajectory
1y · 2025–NowProvides leadership development and organisational culture consulting, including executive facilitation, strategy alignment workshops, keynote speaking and conference facilitation. Supports senior…
Serves B2B executive teams and senior leaders at global brands, smaller businesses and fast-growing companies across sectors, especially those managing change, culture, strategy alignment and…
Financial Health
Insufficient historyInsufficient history
Location
RED PENGUIN ASSOCIATES LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides marine consultancy and subsea cable engineering services for offshore infrastructure projects. Advises on project strategy, planning, construction and asset management for submarine cable…
Serves B2B owners and developers of complex subsea cable systems, particularly in power transmission, telecoms, renewables, oil and gas, and wider marine infrastructure markets.
Financial Health
StableStable · -65% CAGR over 4y
Location
TWC Consulting
Provides environmental and sustainability consultancy for construction projects, including BREEAM assessments, energy modelling, SBEM, SAP and EPC calculations, PAS 2035 advice, renewable energy…
Serves public and private sector clients involved in construction and property development, including project teams for offices, schools, healthcare facilities, fire stations, industrial units,…
Financial Health
Insufficient historyInsufficient history
Location
MARKET TRACTION INTERNATIONAL LTD
Trajectory
5y · 2022–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StrongStrong · Hiring · 19% CAGR over 4y
Location
Allclear Safety and Training Ltd
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsFinancial Health
DistressedDistressed · 0% CAGR over 2y
Location
Hargreaves Strategy Consultants Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
HealthyHealthy · 0% CAGR over 4y
Location
SJP Consultants Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsFinancial Health
HealthyHealthy · 0% CAGR over 2y
Location
RKEW CONSULTING LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
WeakWeak · 0% CAGR over 4y
Location
242 LTD
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsFinancial Health
DistressedDistressed · -90% CAGR over 2y
Location
OUTTHERE RPO LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides outsourced HR and recruitment process outsourcing services for employers, covering employee lifecycle activities including talent attraction, executive search, onboarding, compliance,…
Sells to businesses needing outsourced HR, recruitment and employee lifecycle support, including employers seeking a fully outsourced HR department, internal recruitment support, executive search,…
Financial Health
StrongStrong · Growing, Hiring · 28% CAGR over 4y
Location
COMPLETE PROJECTS (SOUTH) LTD
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
DistressedDistressed
Location
Excelsior Commercial Services Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StableStable · 0% CAGR over 4y
Location
MBB-CONSULTING GROUP LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
WeakWeak · -68% CAGR over 4y
Location
HOWELL CONSULTING LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StableStable · -68% CAGR over 4y
Location
TOBELI LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StableStable · -68% CAGR over 4y
Location
O-S-B Consulting Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
HealthyHealthy · 0% CAGR over 4y
Location
PMDA Limited
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StrongStrong · Growing · 0% CAGR over 4y
Location
What Next Strategy & Planning Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StableStable · -10% CAGR over 4y
Location
True Partnership Limited
Trajectory
5y · 2022–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StrongStrong · Hiring · 22% CAGR over 4y
Location
SEAWAYS GLOBAL LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StableStable · -68% CAGR over 4y
Location
Proventa Consulting Limited
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsOrganises strategy meetings and conferences for the life sciences sector and provides business development consulting, talent acquisition and executive search services. Connects pharmaceutical,…
Serves B2B life sciences organisations, including pharmaceutical and biotech companies, service providers, senior R&D, clinical and CMC leaders, business development teams, and healthcare investors.
Financial Health
WeakWeak
Location
Work Safe Solutions Limited
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
WeakWeak · 0% CAGR over 4y
Location
Super Happy Wing Limited
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StrongStrong · Growing, Hiring · 62% CAGR over 4y
Location
CJN Recycling Limited
Trajectory
1y · 2024–NowFinancial Health
Insufficient historyInsufficient history
Location
G Richards Recycling Limited
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsFinancial Health
HealthyHealthy · Hiring · 33% CAGR over 3y
Location
M&S LYONS LTD
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsFinancial Health
StableStable · -78% CAGR over 3y
Location
Intellispear Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StableStable · 0% CAGR over 4y
Location
GDR Recycling Limited
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
HealthyHealthy · Hiring · 10% CAGR over 4y
Location
McKinsey Management Services Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides management consulting services to businesses and public sector organisations, advising on corporate strategy, operations, technology and AI adoption, organisational transformation, and…
Serves senior executives and organizational leaders at large corporations, public-sector bodies, nonprofits and institutions across multiple industries worldwide.
Financial Health
StrongStrong · Growing, Hiring · 14% CAGR over 4y
Location
AWP ASSOCIATES LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides management consulting services focused on business strategy development, value chain and go-to-market design, operational performance improvement, operating model alignment, capability…
Serves businesses and management teams seeking support with strategy, value chain design, go-to-market planning, operational transformation, capability development and change management.
Financial Health
WeakWeak · -10% CAGR over 4y
Location
Easier Inc Limited
Trajectory
5y · 2022–NowFinancial sub-scores
Computed from 5 filingsProvides management consultancy focused on organisational improvement, facilitating structured conversations and workshops to help teams identify priorities, align stakeholders, and address process…
Serves public sector and business organisations, including NHS and primary care bodies, local councils, healthcare providers, financial services firms, and leadership teams managing operational…
Financial Health
StrongStrong · Growing · 0% CAGR over 4y
Location
Elephants Child Advisory Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides strategic business advisory services to small and medium-sized enterprises, including growth planning, capital raising support, business turnaround advice, board-level advisory, and…
Serves UK SME business owners and directors facing growth, funding, turnaround or exit decisions, including companies seeking board-level advisory support and capital planning.
Financial Health
StableStable · -4% CAGR over 4y
Location
Birch Bernto and Associates Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides organisational culture change and engagement consultancy. Develops training, leadership development and communication programmes that help organisations improve health, safety,…
Serves large private-sector and public-sector organisations across manufacturing, energy, healthcare, retail, defence and government, targeting leaders and teams responsible for safety, wellbeing,…
Financial Health
HealthyHealthy · Hiring · 13% CAGR over 4y
Location
Encordia Consulting Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides management and technology consulting focused on large-scale digital transformation. Services include business process improvement, system integration, process automation, and user experience…
Serves businesses undertaking large, complex digital and back-office transformation projects, working with internal teams, key stakeholders and suppliers involved in operational change and technology…
Financial Health
StrongStrong · Growing, Hiring · 32% CAGR over 4y
Location
Palladium Holdings Limited
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides consulting and programme management services for governments, businesses and investors, including strategy development, impact investment, supply chain management, and delivery of…
Serves governments, public-sector bodies, private businesses and investors across global development, infrastructure, climate, health, education, governance, energy, mining and sustainable investment…
Financial Health
WeakWeak
Location
CHINDIT DEFENCE TECHNOLOGIES LLP
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsAdvises government departments on defence, security and infrastructure procurement projects. Connects governments with technology providers, conducts analysis and due diligence, and supports…
Serves governments and public-sector decision-makers, particularly nation states with developing or maturing infrastructure and security capabilities, as well as private-sector technology and…
Financial Health
StableStable
Location
ROBERT PEEL INTERNATIONAL LIMITED
Trajectory
4y · 2023–NowFinancial sub-scores
Computed from 4 filingsProvides training, consultancy and procurement services in policing, criminal justice, security and rule of law. Delivers courses in first aid, conflict management, safeguarding and personal safety,…
Serves public and private sector organisations, including government bodies, NGOs, military, defence, policing, NHS contractors, universities and security-related businesses, in the UK and overseas.
Financial Health
HealthyHealthy · Hiring · 30% CAGR over 3y
Location
And Another Day Ltd
Trajectory
1y · 2025–NowProvides digital innovation consultancy, designing and developing software and technology solutions including AI applications, SaaS platforms, data systems, and IoT tools. Works with organisations on…
Serves startups, businesses, international organisations, government departments, not-for-profits, academic institutions, humanitarian organisations and philanthropic foundations aligned with UN SDGs.
Financial Health
Insufficient historyInsufficient history
Location
ASESORIA GROUP LIMITED
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides consultancy and advisory services on environmental, social and governance (ESG), sustainability strategy, corporate governance, leadership development, and social value programmes, offering…
Targets businesses and other organisations of all sizes seeking support with corporate sustainability, ESG, governance, leadership development and social value across multiple industries.
Financial Health
DistressedDistressed · -16% CAGR over 3y
Location
Peas In A Pod Consulting Limited
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides outsourced HR consultancy and leadership support to businesses, including recruitment support, employment law compliance, HR policies, performance management, dispute resolution, employee…
Serves business owners and leadership teams at SMEs, charities and other employers, with an emphasis on organisations in Hampshire that manage staff across the employee lifecycle.
Financial Health
StrongStrong · Growing, Hiring · 41% CAGR over 4y
Location
DECTECH LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides behavioural science consultancy, using research and experimental methods to analyse consumer decision‑making. Works with companies and public organisations to test pricing, product design,…
Serves large businesses, regulators and charities in sectors including financial services, insurance, energy, retail, telecoms and consumer platforms, typically senior teams seeking behavioural…
Financial Health
HealthyHealthy · 0% CAGR over 2y
Location
ENSPIRE GROUP LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsAdvises governments on economic development by identifying underused national assets, establishing government‑linked companies, and attracting global capital and technical partners to build…
Serves national governments and senior public-sector leaders, alongside private enterprises and global capital partners involved in country-level economic development and infrastructure initiatives.
Financial Health
StableStable · -71% CAGR over 4y
Location
DIEM Analytics Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDevelops analytical models, simulations and decision-support tools to support defence and security planning. Provides research, analysis and experimentation during capability concept and assessment…
Serves defence and security organisations, including government defence stakeholders from tactical to strategic levels, defence primes, and research organisations involved in capability development…
Financial Health
HealthyHealthy · Hiring · 19% CAGR over 4y
Location
R S P Mechanical Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides engineering, environmental and management consulting services for infrastructure and development projects, including architecture, civil engineering, planning, environmental impact…
Serves businesses and public-sector organisations globally in property, energy, water, transport, resources and defence, including project owners, developers, infrastructure operators and government…
Financial Health
DistressedDistressed · 0% CAGR over 4y
Location
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How Portsmouth Consulting companies work and how to sell to them
What they do
Consulting firms usually earn fees by selling time, judgement and delivery capacity rather than owned technology. Revenue commonly comes from fixed-fee diagnostic work, day-rate support, retained advisory arrangements and longer time-and-materials programmes. A smaller set package repeat methods into workshops, benchmarking exercises or managed delivery offices, but the underlying model is still professional services: director oversight, consultant capacity, analysis, recommendations and implementation support. Engagements tend to be scoped around an outcome the client can sponsor, such as a cost review, operating-model change or troubled project, with pricing shaped by seniority, expected duration, risk transfer and whether the consultant is accountable for delivery.
Who they sell to
Portsmouth consultancies typically sell through relationships, referrals and repeat work, especially where the buyer is an owner-managed business or local institution. Mid-market and public-sector buyers add more process: budget holders may include the chief executive, finance director, operations director, transformation lead or programme sponsor, while procurement and legal teams become involved once spend, confidentiality or tender rules matter. Lower-risk scoping projects can move quickly when the sponsor has a live problem; larger change mandates usually need a written proposal, evidence of relevant delivery, insurance checks and several stakeholder conversations before award.
What they buy
Most consulting firms tend to spend on tools that improve billable utilisation, pipeline visibility and project control. CRM, proposal management, time recording, finance, resource planning, document management and collaboration software are common targets, alongside cybersecurity, backup, accounting, tax, legal and insurance services. Practices with associate networks may also need contractor onboarding, compliance checks, knowledge-sharing systems and margin reporting by project. Marketing spend is usually practical rather than brand-led: search visibility, case-study production, bid support, sector events and account-based outreach. Recruitment and interim resourcing can matter when firms win work faster than permanent hiring can absorb.
Why and how to sell to them
Consulting buyers tend to evaluate suppliers when commercial strain becomes visible: utilisation is hard to track, proposals take too long to assemble, delivery evidence sits in individual inboxes, or cash collection lags behind project work. Other triggers include a move from founder-led delivery to a wider team, entry into public-sector tendering, a new practice lead, or an uptick in subcontractor use. Outbound works better when it connects to margin leakage, bid conversion, compliance burden or reduced non-billable admin. Generic productivity claims are easy to ignore; a sharper angle is to show where a consultancy loses fee-earning time or fails to evidence value to clients.
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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Frequently asked questions
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