Castore, the British sportswear model backed by Sir Andy Murray and which adorns a bunch of Premier League soccer kits, has reached a valuation of almost £1bn after scoring a bumper funding from a bunch of latest backers.

Sky News can reveal that Castore has struck a deal to boost £150m from buyers together with Raine Group - the US-based service provider financial institution whose advisory group is engaged on the sale of a minority stake in Manchester United Football Club.

Sources mentioned the deal can be introduced publicly on Thursday.

The capital-raising represents a landmark deal for one in every of Britain's fastest-growing start-ups of the final decade.

Launched in 2016 by Liverpudlian brothers Phil and Tom Beahon, Castore has struck alliances with dozens of the world's main sports activities groups, together with McLaren and Red Bull Racing in Formula One, the England Test cricket group, and Aston Villa, Newcastle United and Wolverhampton Wanderers within the Premier League.

The brothers' imaginative and prescient was to compete aggressively with international rivals Nike and Adidas in a comparatively underserved marketplace for the availability of kits to athletes and supporters of groups beneath probably the most elite names.

The firm suffered a setback earlier this yr when issues have been raised concerning the high quality of a few of its merchandise, together with by quite a lot of Aston Villa males's and ladies's gamers.

Castore mentioned on the time that it had moved swiftly to deal with the difficulty.

One of the corporate's buyers mentioned the brand new capital can be earmarked to increase its provide chain, advertising and marketing presence and international attain.

Sir Andy, the three-time Grand Slam winner and double Olympic gold medallist, has been a shareholder within the firm since 2019.

At the time, he mentioned it was "a young, exciting brand that offers something different, with products that are really well cut and designed".

"For me it was a natural progression from previous kit partners."

The enterprise, which primarily sells its merchandise on-line, positions itself as a high-quality different to established rivals corresponding to Adidas and Puma.

Sky News reported earlier this yr that Rothschild, the funding financial institution, had been appointed to orchestrate the capital increase.

Castore was reported to have been valued at £750m after a debt financing which came about final yr.

That deal noticed it lengthen its borrowing services to embody quite a lot of new lenders.

The firm's fundraising is especially spectacular given the backdrop for such offers, which has change into more and more difficult in latest months.

Existing shareholders in Castore embrace the billionaire Issa brothers, who collectively personal Asda and the petrol forecourts big EG Group.

The founders of Pure Gym and New Look are additionally among the many firm's backers.

Bankers imagine Castore is a logical candidate for a medium-term inventory market flotation because it expands.

Castore declined to remark.