Best In B2B 2025: Top Marketing Agencies In The UK

Our 2025 edition of our report is back and as always, we’re here to break down the biggest and best agencies in B2B marketing. Let’s face it; it’s been a tough year due to budget cuts and the pressure to deliver more with less. So we were curious to see how agencies were shaping up for this year. 

Starting with our league tables, we revealed insights around gross income, YoY growth, headcount and its overall ranking. So who cracked the top 10 UK marketing agencies?

1. Edelman
2. Dentsu B2B
3. Gravity Global
4. Bray Leino
5. Brands2Life
6. Twogether
7. Ledger Bennett
8. Transmission
9. McCann Enterprise
10. Omne

This report also includes specialist tables on the top:

• Agencies experiencing the largest % increase in gross income YoY
• Agencies experiencing the largest £ increase in gross income YoY
• B2B Content marketing agencies
• B2B Brand agencies
• B2B Demand generation agencies
• B2B ABM agencies

In addition to our robust tables, we have included commentary from business leaders, portfolios highlighting campaign artwork and profiles featuring industry specialisms and awards. Want to find out the top digital marketing companies in the UK? Or those positioning themselves as tech or advertising marketing agencies? You’ll find it all here.

Want to see the breakdown of the remaining companies, alongside each agency’s headcount, gross income, YoY growth and more? Download the full report by filling in your details on the righthand side.

Whether you’re looking to see how your competitors stack up against yours or looking for the right agency fit, this report is chock-full of useful information you’re searching for.