Agency by Agency provides a comprehensive, independently maintained map of the UK’s marketing, advertising, creative and media agency sector. We have mapped and track around 25,000 active agencies across 29 specialisms, using data built from the ground up from registered and operating addresses at Companies House, enriched with capability, size, ownership, growth and financial data.
We use that mapping to help people find agencies, and to help agencies get found. We deliver intelligence as bespoke research, ongoing advisory services or real-time data and we publish analysis of the sector through the Agency by Agency Atlas and our archive of reports and articles.
Latest articles and reports
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- Article
The data on the data agencies: What makes Data and Analytics stand out
Our insight into Data and Analytics agencies we have mapped, drawing on the Agency by Agency Atlas 2026 and its supporting specialism data.
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- Article
- Partnership
83p in the pound: Gender pay gaps across the UK’s largest agencies
Exploring the gender pay gap within the UK’s largest agencies and what it means for the sector. In collaboration with gender pay gap consultant Lynda Harvey.
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- Article
- Partnership
The language trap: How agencies describe themselves and what it reveals about differentiation
A collaboration between Agency by Agency and Treacle to explore how similarities in agency descriptions can make it hard to stand out from the crowd.
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