10 Oct 2026 · TrustList Editorial
Innovate UK opens a £2m Eureka call for UK-Japan R&D partnerships
The Globalstars Japan 2027 call closes at 11:00 UK time on 20 January 2027, competition 2586 on the Innovation Funding Service. Innosuisse…
188 of 497 advertising companies ranked on evidence in the Q4 2026 edition.
We list 23 advertising companies in the UK. The order comes from what each firm publishes and what has been verified about it, never from payment — at the top right now: Hydrant, CRISP and KAT Marketing.
Before you shortlist, check
TrustList ranking
Q4 2026 edition
188 of 497 advertising companies ranked on evidence held on 9 October 2026: client reviews, vetting, awards and facts each business states on its own website, which we read and date. Nobody pays to be placed.
Positions are fixed for the quarter; the next edition is due in January 2027.
The SME ranking on this page lists 473 small and medium-sized agencies, and 101 of them earned a rank number. One business known to be large is left out, and the SME order does not reward age. See the SME ranking

Branding · eCommerce · Also in Renfrew and Glasgow
GT4 Design + Web is a branding and web design company in Blantyre, South Lanarkshire, Scotland, serving Hamilton and the surrounding area.
On record: Based in Blantyre, South Lanarkshire, Scotland

Consumer Products & Services · Advertising & Marketing · Business Services · Also in Bristol and Wales
GWS Media is a full-service digital marketing agency working from offices near Bristol Temple Meads station.
On record: Based in near Bristol Temple Meads, England

Arts, Entertainment & Music · Advertising & Marketing · Business Services
H&H is an internal communications agency in the UK. It designs campaigns that help large employers shift culture, explain change and keep staff engaged, drawing on behavioural…
On record: Based in UK

Hall & Partners is a research agency that helps marketers make decisions from consumer insight. It grew out of the advertising world and mixes creative thinking with data analysis.
On record: Address in United Kingdom · Small consultancy

Arts, Entertainment & Music · Energy & Natural Resources · Advertising & Marketing
Hammer Design is a graphic design and creative marketing studio working in and around the Peak District in Derbyshire.
On record: Based in Derbyshire, England

Advertising & Marketing · Business Services · Creative · Also in Sunderland
Hanson Brown Creative Ltd is a small marketing and design agency in Keighley, West Yorkshire.
On record: Based in Keighley, England

Creative · eCommerce · Responsive
Harmonypark is a digital studio based in Hackney, London. It supplies the technical side of digital projects for creative companies, from studios to start-ups.
On record: Based in Hackney, London, UK

Consumer Products & Services · Creative · Video · Also in Leeds and London
Hatch Communications is an independent creative communications agency with offices in Leeds and London.
On record: Based in Leeds and London, UK

Creative · Medical · Advertising
Hatch Creations Ltd, known as Hatch, is a graphic design studio in South London.
On record: Based in South London, UK

Headline is a venture capital investor that backs companies across several sectors and at any stage of growth.
On record: Based in San Francisco, Paris, London, São Paulo, Taipei and Tokyo · Boutique

Retail · Education · Manufacturing
Heckford is a marketing and creative agency in Preston, Lancashire. Design is the base of its work, and the team applies the same care to each project.
On record: Based in Preston, Lancashire

Advertising & Marketing · Business Services · Branding
Heighton AGency, which trades as HeightOn, is a brand, web and digital agency working with small and medium-sized businesses.
On record: Based in Sussex, England

Consumer Products & Services · Advertising & Marketing · Hospitality & Leisure
Hello Starling is a media planning and buying agency that plans campaigns around the results each client cares about.
On record: Address in United Kingdom

Consumer Products & Services · Arts, Entertainment & Music · Non Profit
Hex Digital is a digital agency in London that designs brands, marketing websites and digital products.
On record: Based in London, UK

Arts, Entertainment & Music · Hospitality & Leisure · Business Services · Also in Wales
HigherSites Group is a design and marketing agency based in Somerset, England.
On record: Based in Somerset, England

Creative · SEO · Responsive · Also in England and Wales
HighStreet Media is a creative, digital and print studio that serves clients in South Wales and, more widely, England and Scotland.
On record: Based in South Wales, UK

Business Services · Web Design · Digital Marketing · Also in Delhi and Asia
Hogarth Worldwide is a production company that combines creative craft, insight and technology to deliver advertising and content work.

Consumer Products & Services · Arts, Entertainment & Music · Hospitality & Leisure
Holdens is a creative and marketing agency headquartered in Manchester with clients beyond the UK.
On record: Based in Manchester, England

Hospitality & Leisure · Business Services · Information Technology · Also in Bedford
HoneyBe Creative is a creative digital marketing agency in Exeter, Devon. It works with clients of every size, from start-ups and small firms to large enterprises.
On record: Based in Exeter, Devon

Consumer Products & Services · Arts, Entertainment & Music · Hospitality & Leisure
Hooke Design & Marketing Ltd is a UK multi-disciplinary design and marketing co-operative.
On record: Based in United Kingdom, with work for clients in Ambleside and Preston

Advertising & Marketing · Business Services · Financial Services · Also in Leeds
HUB is a creative marketing agency in London. Its current work centres on the financial services sector, where it helps boards, marketing teams and investment firms reach retail,…
On record: Based in London

Internet
Hughes Media Internet is a digital agency based in Worcester, England, that designs, builds and promotes websites. It says it works for companies in the UK and around the world.
On record: Based in Worcester, UK

Advertising & Marketing · Non Profit · Creative · Also in Manchester
Humanoid is a video production and strategy agency serving clients from Staffordshire and Birmingham.
On record: Based in Staffordshire and Birmingham, England

Creative · eCommerce · Goals · Also in Glasgow
Hurtle Creative is a brand and creative agency in Glasgow. Its clients are owners and managers of businesses in Glasgow, in Ayrshire and elsewhere in the west of Scotland.
On record: Based in Glasgow, Scotland
For vendors
The order is earned on evidence: client reviews, vetting, awards and the facts a business states on its own website, which we read and date. Nobody can pay to move up. Add reviews or verified facts to your free profile to move up at the next edition; there are two ways to stand out now, and each one says what it is.
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The order comes from what each firm publishes and what has been verified about it, and never from payment:
Client reviews are still rare across this catalogue, so on most lists today the order is set by the first two. A firm near the top is the best-documented and best-verified one we hold, which is not the same claim as the best one to hire. Use the list to build a shortlist, then check the firms yourself.
Sponsored listings are labelled and shown apart from this list. How rankings work
Only firms whose profile names the UK are counted here, so a firm that lists a town but no country is not yet included.
The same list elsewhere: India (92) · Canada (41) · Australia (28).
Every category in the UK: the UK country page.
Every other way we rank advertising companies, by what they do and where they are.
Articles on this subject first, then the newest.
10 Oct 2026 · TrustList Editorial
The Globalstars Japan 2027 call closes at 11:00 UK time on 20 January 2027, competition 2586 on the Innovation Funding Service. Innosuisse…
9 Oct 2026 · TrustList Editorial
Apiax, founded in 2017, covers more than 200 jurisdictions; the deal closed with terms undisclosed and existing customers keep their…
8 Oct 2026 · TrustList Editorial
Nine of the fifteen tighten duties and six ease terms. Eleven carry a calendar date, the first on 30 October, and Singapore’s rule is not…
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