PR Agency Companies in Cardiff: 86 Active Firms (2026)
PR agencies in Cardiff manage media relations, campaigns, communications strategy and reputation for organisations across the city region.
Buying centres tend to sit with marketing directors, founders, public-affairs teams and chief executives rather than procurement-led software buyers. Retained work is usually sold on trust, sector access and senior counsel, with campaign projects added around launches, consultations, funding announcements or reputational issues. The buyer base is mixed: local SMEs and founder-led firms, South Wales public-sector bodies, charities and mid-market UK businesses that need Cardiff-area knowledge without a London agency footprint. Typical engagements look service-heavy and advisory, often involving media handling, stakeholder mapping, message development and executive support rather than outsourced marketing operations.
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Cardiff has 86 actively trading PR agencies, a compact local cohort rather than a national-agency centre. Reported employment totals 229 people, with all 55 firms in the employment-covered cohort reporting some headcount, equivalent to 100%. Scale is concentrated at the smaller end: 1 agency has turnover above £5M, while 20 were incorporated since 2022. That mix points to many owner-managed consultancies and younger communications shops serving South Wales clients, plus a small number of firms with the revenue profile to compete for broader UK briefs.
UK PR work is not licensed like financial services or utilities; market entry is shaped more by client due diligence, reputation and professional codes than by authorisation. For agencies that are PRCA members, conduct rules sit in the PRCA Code of Conduct, with lobbying-specific obligations through the Code for Professional Lobbying and the Professional Lobbying Register. Consultant lobbying also has a statutory layer, including registration requirements, a register kept by the Registrar of Consultant Lobbyists and a prohibition on consultant lobbying unless registered.
The Cardiff cohort appears likely to remain service-heavy and relationship-led rather than platform-like. Early-commercial agencies can form around founder networks and local public-sector or non-profit briefs, but scaling beyond a regional consultancy model tends to require repeatable specialisms, tendering capacity and senior advisers who can cover reputational risk. Consolidation may be selective: larger UK agency groups can absorb specialist teams, while smaller consultancies often remain independent where client relationships are personal. Lobbying transparency, procurement scrutiny and client demands for measurable outcomes should keep process discipline visible.
What’s in the file
One row per company, 50+ columns — everything below plus each company’s verified directors, from Companies House filings.
Company data
Verified directors — included
86
Active firms
2026
20
Incorporated since 2022
Cardiff cohort
1
Above £5M
Reported turnover
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Key facts
About 1% of the trading cohort reports turnover above £5M (1 of 86 firms) — the rest sits below that revenue band.
23% of the cohort was incorporated since 2022 (20 firms), so a sizeable share is in its first few filing cycles.
UK PR agencies are not generally licensed in the same way as financial services or utilities firms; professional standards sit mainly with sector bodies.
PRCA members must follow its Code of Conduct, with extra lobbying rules and declaration requirements for members undertaking professional lobbying.
Consultant lobbying has a statutory layer under Part 1 of the Transparency of Lobbying, Non-Party Campaigning and Trade Union Administration Act 2014.
The UK's 150 largest agencies generated about £2 billion of annual revenue in 2023.
UK public relations and communication activities employed 35,663 people in 2025.
Top Cardiff PR Agency companies
Financial Health
N/AN/A
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Computed from 5 filingsProvides public relations and strategic communications services including stakeholder and community engagement, consultation campaigns, and communications strategy for organisations involved in…
Serves organisations running infrastructure, housing, energy, environmental and public policy projects, including public bodies and private developers needing community engagement.
Financial Health
StrongStrong · Hiring · 27% CAGR over 4y
Location
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Provides public relations and strategic communications services, including community engagement, messaging development, media relations, and event planning. Works with organisations to communicate…
Serves public-sector agencies, civic institutions, and community-focused organizations managing policy, program, or community initiatives that involve residents and stakeholders.
Financial Health
N/AN/A
Location
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Computed from 2 filingsProvides public relations and marketing services including communications and marketing strategy, digital marketing, branding and design, event management, content and video production, advertising,…
Serves B2B, public sector and not-for-profit clients, including healthcare, professional services, legal, education, trade union, membership, transport and energy organisations.
Financial Health
WeakWeak · -19% CAGR over 1y
Location
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Computed from 5 filingsProvides public relations and communications services including media relations, crisis communications, reputation management, press release production, social media management, and marketing…
Serves private sector companies, not-for-profits and major public institutions, targeting brand, marketing, corporate communications and PR leaders managing public reputation and media relationships.
Financial Health
HealthyHealthy · 0% CAGR over 4y
Location
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Computed from 4 filingsProvides creative communications and public relations services including research and insights, strategy development, creative campaigns, press office support, content production, newsjacking and…
Serves brands and public-sector organisations, targeting marketing and communications teams that need to engage diverse, underrepresented or global audiences and improve representation in their…
Financial Health
StableStable · 0% CAGR over 3y
Location
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Computed from 5 filingsProvides public relations and communications services including campaign strategy, media relations, film and video production, digital marketing, media buying, brand development, and content…
Serves organisations in Wales and internationally that need to reach public audiences, including clients requiring bilingual English/Welsh communications.
Financial Health
WeakWeak · -68% CAGR over 4y
Location
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Computed from 3 filingsProvides communications consultancy using behavioural science to design social and behaviour change campaigns. Conducts audience research, develops creative campaign assets, and advises organisations…
Serves public sector bodies, NHS organisations, local and national government, NGOs, companies and brands needing behaviour-change and misinformation-related communications support.
Financial Health
DistressedDistressed · -45% CAGR over 2y
Location
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Computed from 2 filingsFinancial Health
DistressedDistressed · -13% CAGR over 1y
Location
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Computed from 5 filingsProvides communications and marketing services, developing integrated campaigns including research, strategy, creative development and production. Works with public sector bodies, charities and…
Serves public sector bodies, charities, healthcare organisations and cause-led businesses in Wales, including government, NHS, social care, community, retail and music-sector clients.
Financial Health
HealthyHealthy · Hiring · 10% CAGR over 4y
Location
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Computed from 4 filingsFinancial Health
DistressedDistressed · 0% CAGR over 3y
Location
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Computed from 3 filingsFinancial Health
WeakWeak · 0% CAGR over 2y
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Financial Health
N/AN/A
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Financial sub-scores
Computed from 5 filingsFinancial Health
WeakWeak
Location
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Financial sub-scores
Computed from 5 filingsFinancial Health
StableStable · -68% CAGR over 4y
Location
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Computed from 5 filingsFinancial Health
StableStable · 0% CAGR over 4y
Location
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Financial sub-scores
Computed from 5 filingsFinancial Health
StrongStrong
Location
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Computed from 4 filingsFinancial Health
HealthyHealthy · -84% CAGR over 3y
Location
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Computed from 5 filingsFinancial Health
DistressedDistressed · 0% CAGR over 4y
Location
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Financial sub-scores
Computed from 5 filingsFinancial Health
DistressedDistressed
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Financial sub-scores
Computed from 3 filingsFinancial Health
HealthyHealthy · 0% CAGR over 2y
Location
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Financial sub-scores
Computed from 5 filingsFinancial Health
WeakWeak
Location
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Financial sub-scores
Computed from 5 filingsFinancial Health
WeakWeak · 0% CAGR over 4y
Location
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Financial sub-scores
Computed from 5 filingsFinancial Health
DistressedDistressed · 0% CAGR over 4y
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Financial sub-scores
Computed from 4 filingsFinancial Health
StrongStrong
Location
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Financial sub-scores
Computed from 5 filingsFinancial Health
WeakWeak · 0% CAGR over 4y
Location
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Financial sub-scores
Computed from 5 filingsFinancial Health
WeakWeak
Location
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Financial sub-scores
Computed from 5 filingsFinancial Health
WeakWeak
Location
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Financial sub-scores
Computed from 5 filingsFinancial Health
DistressedDistressed
Location
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Financial Health
N/AN/A
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Computed from 5 filingsFinancial Health
StableStable
Location
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Financial sub-scores
Computed from 5 filingsFinancial Health
DistressedDistressed
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Computed from 3 filingsFinancial Health
DistressedDistressed
Location
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Computed from 3 filingsProvides public relations and publicity services for television, film, and entertainment projects. Works with production companies and broadcasters to promote series and cultural productions through…
Serves B2B clients in television, streaming and entertainment, including production companies, broadcasters, platforms and cultural organisations promoting scripted series and screen-related projects.
Financial Health
StableStable · -89% CAGR over 2y
Location
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Financial sub-scores
Computed from 3 filingsFinancial Health
WeakWeak
Location
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Computed from 5 filingsProvides public relations and digital communications services, including media relations, brand reputation management, public affairs, social media, marketing, and content production such as design…
Serves UK businesses, public bodies and charities, targeting organisations that need external support with PR, public affairs, brand reputation and digital communications.
Financial Health
StableStable · -66% CAGR over 4y
Location
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Computed from 5 filingsProvides public relations and communications services including marketing campaigns, brand development, digital and social media content, creative production, and event communications for…
Serves businesses and organisations needing communications support, including universities, housing providers, tourism bodies, charities, manufacturers and food and drink producers. Targets brand,…
Financial Health
StableStable · 0% CAGR over 4y
Location
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Computed from 3 filingsProvides public relations and digital marketing services, including media relations, SEO, paid media management, social media campaigns and content marketing, supporting organisations with…
Serves businesses and organisations seeking PR and digital marketing support, including hospitality venues, events, education and care providers, financial tools and regional brands in Wales.
Financial Health
StableStable · Hiring · 6% CAGR over 2y
Location
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Computed from 5 filingsFinancial Health
HealthyHealthy · 0% CAGR over 4y
Location
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Financial Health
N/AN/A
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Computed from 5 filingsFinancial Health
WeakWeak · 0% CAGR over 4y
Location
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Financial sub-scores
Computed from 5 filingsFinancial Health
WeakWeak
Location
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Financial sub-scores
Computed from 2 filingsFinancial Health
StableStable
Location
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Financial sub-scores
Computed from 3 filingsFinancial Health
DistressedDistressed · 0% CAGR over 2y
Location
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Financial sub-scores
Computed from 5 filingsFinancial Health
StableStable · 0% CAGR over 4y
Location
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Financial sub-scores
Computed from 5 filingsFinancial Health
StableStable · 0% CAGR over 4y
Location
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Financial sub-scores
Computed from 5 filingsFinancial Health
HealthyHealthy · 0% CAGR over 4y
Location
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Financial sub-scores
Computed from 5 filingsFinancial Health
StableStable · 0% CAGR over 4y
Location
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Financial sub-scores
Computed from 3 filingsFinancial Health
DistressedDistressed
Location
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Computed from 5 filingsFinancial Health
WeakWeak · -73% CAGR over 4y
Location
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How Cardiff PR Agency companies work and how to sell to them
What they do
Cardiff PR agencies usually earn through monthly retainers, fixed-fee campaigns and advisory projects rather than licence or transaction income. Retainers cover media relations, press office support, corporate communications and stakeholder engagement; project work tends to attach to launches, consultations, issues management, events or public-affairs activity. Pricing is usually built around senior time, account-team capacity and deliverables, with subcontracted creative, research or production costs passed through where needed. The operating model is people-heavy, so utilisation, scope control and client retention matter more than software-like volume economics.
Who they sell to
Most Cardiff PR agencies sell to founders, chief executives, marketing directors, communications heads, public-affairs teams and charity leaders. Founder-led SMEs may buy through referrals and short chemistry-led conversations, while public-sector and non-profit clients tend to involve tenders, framework participation or documented procurement. Mid-market clients usually expect evidence of sector access, crisis judgement and measurable coverage or stakeholder outcomes before committing. Sales cycles vary by buyer type: campaign projects can move quickly around a launch or reputational issue, while retained corporate communications work often needs senior buy-in and budget alignment across several internal stakeholders.
What they buy
Most PR agency firms tend to spend on tools and services that improve account delivery, reporting and staff utilisation. Common software categories include CRM, pipeline tracking, project management, time recording, finance, client reporting, media monitoring, social listening, email distribution, stakeholder databases and analytics. They also buy professional indemnity cover, legal support for contracts and disputes, accountancy, payroll, HR advice, recruitment, freelance writing, design, video, research and web services. Agencies handling public-affairs or lobbying-adjacent briefs may also value compliance support, register monitoring and documentation processes that reduce risk without slowing senior advisers down.
Why and how to sell to them
PR agency buyers tend to evaluate vendors when retained revenue is under pressure, reporting demands rise, a new client win stretches delivery capacity, or a senior hire starts formalising processes. Other triggers include tender activity, a move from founder-led account handling to team-based delivery, client requests for clearer outcomes, and greater scrutiny around lobbying or stakeholder work. Outbound messages usually land better when they link to billable time, margin leakage, client retention, faster reporting or lower compliance friction. Generic productivity claims are less persuasive than evidence that a service fits advisory workflows and protects senior-client relationships.
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.
Sources
- Transparency of Lobbying, Non-Party Campaigning and Trade Union Administration Act 2014
- Part 1 of the Act is titled "Registration of consultant lobbyists".
- Section 1 is titled "Prohibition on consultant lobbying unless registered".
- Sections 3 to 7 cover "Keeping the register", including "The Registrar of Consultant Lobbyists" and "The register".
- Section 7 is titled "Publication of register".
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Frequently asked questions
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