General information
- Country: United Kingdom
- Company: Channel 4
- Client: B Lab UK
- Sector: Multi-sector (CPG & B2B)
- Media: Linear TV, streaming
- Budget: £600,000 total (£120,000 in free airtime per winning business)
- Time period: March – September 2025
Background
B Corp certification is a globally recognised standard for businesses that meet high levels of social and environmental performance, accountability, and transparency. The certification is awarded by B Lab, a non-profit organisation. In the UK, there are thousands of certified B Corps, many of them small businesses with ambitions to reach mainstream audiences at scale. Channel 4 saw an opportunity to use its platform to spotlight these purpose-driven businesses while supporting its own sustainability commitments under the Ad Net Zero Action Plan, an industry initiative to reduce the carbon impact of advertising.
Description
Rather than a traditional advertising partnership where a brand pays for airtime, Channel 4 flipped the model entirely. The broadcaster partnered with B Lab UK to launch an exclusive competition offering five certified B Corps the chance to win free TV advertising airtime. This gave small, ethical businesses the opportunity to build on their existing marketing strategies by stepping into national television advertising, unlocking true scale alongside major advertisers.
The initiative was launched in March 2025 to coincide with B Corp Month, an annual global campaign celebrating certified B Corporations. The competition attracted more than 200 entries from across the UK, with nine finalists invited to pitch to a panel of expert judges.
The five winning businesses were Ancient & Brave (a wellness supplements brand), Ticket Tailor (an event ticketing platform), Tiny Rebel Brewery (a craft beer company), Seep (an eco-friendly cleaning products brand), and Divine Chocolate (a Fairtrade chocolate company). For all of these businesses, this was their first time appearing on national television.
The winning businesses’ TV commercials were brought together in a bespoke Channel 4 ad break takeover. All five ads aired back-to-back in a single three-and-a-half-minute slot during Taskmaster, a popular British comedy game show, at primetime on a Thursday evening. Unlike a standard ad break filled with unrelated commercials, this takeover had a unified purpose. It opened with a continuity voiceover explaining the partnership with B Lab and educating viewers on what it means to be a B Corp, turning the commercial break itself into a moment of consumer education. This was supported with additional placements for each individual ad across Channel 4’s linear and streaming platforms.
The campaign also broke new ground in sustainability measurement. Through Channel 4’s partnership with Scope3, a carbon measurement platform, each business could track and evaluate not just commercial return on investment, but also their return on carbon, making this one of the first TV advertising initiatives to measure environmental impact alongside business results.
Channel 4’s sales team played a central role in bringing the campaign to life, working closely with commercial, creative, and sustainability teams. They helped shape creative direction, refine scripts, plan the ad break showcase, and align the narrative with B Lab UK’s mission. Each winning business worked with their own creative agency to produce their ads, with Tiny Rebel Brewery producing their commercial entirely in-house.
Campaign video
Results
The campaign successfully introduced five B Corp certified brands to a national TV audience. Channel 4’s linear broadcast reached 700,000 UK adults, while streaming reached an additional 1 million UK adults.
The winning businesses reported strong commercial results. Seep achieved 70% revenue growth, 75% new customer growth, a 32% uplift in social page views and impressions, and a 112% uplift in branded search impressions. Ticket Tailor saw a 38% year-on-year increase in direct traffic and a 43% increase in search traffic. Ancient & Brave noted significant spikes in site visits and sales during their Channel 4 spots, with stronger uplifts during larger evening show placements.
The initiative also generated significant coverage in trade press and sparked growing interest from agencies, partners, and advertisers for a second year. B Lab UK reported being extremely satisfied with the results, noting increased brand awareness and value added to B Corp brands overall.
Channel 4 plans to repeat the B Lab UK initiative in 2026 to continue supporting the introduction of B Corp certified small businesses to television. The campaign demonstrated that a broadcaster can use its commercial airtime not just to generate revenue, but to actively champion businesses that prioritise people and the planet.