Tangent, which specialises in e-commerce and online communications strategy, has bought Lateral in a bid to grow the digital creative side of its business.
Lateral, which launched in 1997, will move into Tangent's London office, bringing clients including RSPCA, Which? and Hachette UK.
Jon Bains, the co-founder and planning director of Lateral, said: ""Our ambition has always been to build a world class digital marketing business with a true delivery focus and now, with Tangent, there is an amazing opportunity to make a significant impact on the market together, even in these trying times."
Nick Gillett, the managing director of Tangent One, Tangent Communication’s full service digital agency, said: "There is a fantastic synergy between our two businesses which, we believe, will enable us to provide our clients with a dream team of digital knowledge and expertise."