Curious about which marketing agency has taken the crown for the most impressive year-over-year (YoY) growth? Look no further! Our UK Agencies Benchmarking Report is filled with illuminating insights from the B2B landscape, and it’s your go-to source for such pivotal information.
In our exploration of dynamic growth within the B2B sector, we’re thrilled to showcase the top 10 agencies that have reported the largest percentage growth in gross income. It’s important to note that we’ve specifically focused on independent agencies, deliberately excluding larger networks or groups from our findings. Additionally, agencies founded within the last two years weren’t included in our ranking due to their skewed growth percentages, which can be misleading.
In a promising development for the industry, we’ve recorded an outstanding 5.3% increase in the gross income of marketing agencies, climbing from £5.4 million in the previous fiscal year to £5.7 million this year. Impressively, 73.5% of the 83 surveyed agencies reported growth compared to the previous year, indicating a revitalizing trend in the marketplace.
Leading the charge is Darwin, who has outperformed the competition with a jaw-dropping 117% increase in YoY growth from 2024 to 2025. Following closely behind is Dentsu B2B (formerly known as Merkle B2B), which secured the second spot with a robust 55.92% increase in their B2B segment. The complete list of our skyrocketing agencies is as follows:
Exciting times lie ahead for these agencies! All ten have expressed optimism about future growth despite recognizing the challenges in the current B2B marketing landscape. While half of them anticipate hurdles, the other half reported a favorable or strong outlook for the sector. To gain an in-depth analysis of the industry’s landscape, don’t miss our comprehensive overview here.
If you’re eager to delve deeper into the agencies seeing the most monetary growth in the UK, we highly recommend downloading our detailed report here. Discover the Top 10 Fastest Growers, access main league tables, specialist tables, and a treasure trove of insights beyond!
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