Oxford AI startup Decima2 has raised £480,000 in pre-seed funding to eliminate wasted marketing spend for small and medium-sized businesses.

The female-founded startup said the round includes £335,000 in equity investment and £125,000 in equity-free grant support. Investors include Haatch and Y Combinator partner Nicolas Dessaigne.

Decima2 uses causal modelling and generative AI to help businesses understand what genuinely drives growth across paid marketing channels.

The platform continually optimises Google Ads and high-converting landing pages, giving smaller teams access to analytical capabilities traditionally reserved for large enterprises.