Upmarket cycle clothing firm Rapha is set to be sold in a deal that could value the London-based business at almost £150 million, reports Sky News.

Rumours have been circulating since late last year that the firm, founded in 2004, was up for sale, with US-owned investment bank William Blair appointed in April to advise Rapha.

> Rapha reportedly appoints US-owned investment bank to advise on sale of business

Potential purchasers are said to include the private equity firms TPG, whose investments include Ducati and Spotify, and Advent International, backer of businesses such as Fatface and Poundland.

Co-founder and CEO Simon Mottram, whose background is in brand consultancy, had previously brought Active Private Equity on board as an investor.

Despite the company’s four-year sponsorship of Team Sky coming finishing at the end of 2016, business is reported to continue to be booming.

Rapha’s sales in the year to January 2017 are reported to be £63 million, up 30 per cent on the previous year, and growth since then is said to be running at 40 per cent.

Sky News said that neither Advent not Rapha would comment when approached.