Sir Martin Broughton believes he has the drive to make a winning bid for Chelsea

Sir Martin Broughton believes his bid to buy Chelsea would offer the biggest immediate cash injection into the Stamford Bridge club, the PA news agency understands.

Sir Lewis Hamilton and Serena Williams have bolstered Broughton’s bid to buy Chelsea, with the former British Airways chairman among the final three consortiums vying for the west London club.

Seven-time Formula One champion Hamilton and 23-time tennis Grand Slam winner Williams are understood to have been on board in Broughton’s consortium for several weeks.

American private equity billionaires Josh Harris and David Blitzer would hold the controlling stake in Broughton’s bid, it is understood.

The duo would need to divest their minority shareholding in Crystal Palace before completing a deal, but Eagles chairman Steve Parish has already revealed a relaxed position on securing replacement investment for the Selhurst Park club.

Canada’s Rogers family and Taiwan’s Tsai family, owners of the Taipei Fubon Braves and Fubon Guardians baseball teams are also involved in the Broughton consortium.

Broughton is understood to be confident that his group of investors would hand Chelsea access to the most capital of the three consortiums competing to buy the Stamford Bridge club.

A spokesperson for Formula One star Hamilton confirmed the 37-year-old’s involvement in Broughton’s bid.

“We can confirm that Lewis has joined the Sir Martin Broughton bid,” a spokesperson for Hamilton told the PA news agency.

Broughton has partnered with Lord Sebastian Coe on their bid to buy Chelsea, with both lifelong Blues fans determined to take the Stamford Bridge helm.

World Athletics president and London 2012 chief Coe’s presence adds political and sports administration clout, with