Twitter co-founder Biz Stone has joined the board of British financial technology firm R8 as it prepares for a listing on the London Stock Exchange in this summer.
Stone, who recently returned to Twitter to work alongside co-founder Jack Dorsey, will invest as part of £4m of new funding in R8.
Founded by Jonathan Rowland, son of major Tory party donor David Rowland, R8 controls a group of technology start-ups, including cryptocurrency company Mode and electronic payments company Jgoo.
R8 is aiming to go public later this year with plans to raise around £20m at a valuation of up to £50m.
Twitter’s Stone has been a notable early stage investor in a number of US start-ups, including payments company…