Billionaire Mike Ashley, the founder of Sports Direct and owner of Newcastle United, is one of the most intriguing characters in British business and has often been a reluctant fixture in the headlines of the business and sports pages.
With many bricks-and-mortar stores struggling due to a combination of rising rents and increasing online competition, could Mr Ashley prove to be their saviour?
He says to support the High Street, there should be a tax on firms who generate 20% of revenues from the internet.
His sprawling empire includes several sportswear brands, as well as lingerie firm Agent Provocateur, luxury fashion chain Flannels - and major shareholdings in Debenhams and French Connection.
He is certainly adept at finding buying opportunities at a time when analysts talk about a period of unprecedented turmoil on UK High Streets.
Born in Walsall, in the West Midlands, his family moved to Berkshire where his father, a warehouse manager, loaned his 17-year-old son the money to buy his first sportswear shop.
After establishing Sports Direct in 1982, he built his business by buying up well-known names such as Dunlop Slazenger, outdoor gear specialist Karrimor, hat-maker Kangol and the boxing brand Lonsdale. It is now the UK's largest sportswear retailer, with more than 400 stores including the famous Lillywhites shop in London's Piccadilly.
Worth an estimated £2.4bn, he reportedly commutes by helicopter from his north London home, complete with tennis court and swimming pool.
He divorced his wife Linda in 2003, paying out a £50m settlement, and has not remarried. Marriage, he once joked, was one of the few things he couldn't afford. Together the couple have three children.
Observers have struggled to make sense of his retail game plan - not made easier by his less-than-warm relationship with the investment establishment.
His dealings with the City started badly. In 2007 he raised £929m when he sold a 45% stake in Sports Direct but in the following months the shares lost half their value, with many investors unhappy at the way the company was run.
Mr Ashley then called them "cry babies" in a Sunday Times interview, telling the paper: "Sports Direct should come with a government health warning - this stock is not for the fainthearted."
In the past, Sports Direct's reputation has been tarnished by scandals centring on working conditions at its Shirebrook distribution centre in Derbyshire. Mr Ashley has said he has "gone above and beyond" in order to "rebuild the reputation of Sports Direct in the City".
"These achievements have been widely recognised, and it has been acknowledged by a number of independent indexes that the reputation of Sports Direct has been significantly improved."
The firm had been accused of building its success by exploiting workers. In 2016 in a hearing before MPs, Mr Ashley admitted workers at its Derbyshire warehouse were paid below the minimum wage and that its policy of fining staff for being late was unacceptable.
His business habits have been the subject of a 2017 High Court battle over an alleged deal made after a boozy night at a pub near Sports Direct's Oxford Street store. Investment banker Jeffrey Blue claimed that Mr Ashley had agreed to pay him £15m if the firm's share price doubled to £8.
The court ruled in favour of Mr Ashley, saying nobody would have thought that his offer was serious.
However, the court hearing also provided other insights into how he does business. Mr Blue claimed that Mr Ashley had convened "senior management meetings" in a pub near Sports Direct's Derbyshire warehouse, and had once allegedly drank 12 pints and vomited into the fireplace.
But Mr Ashley claimed that this was not a pub they usually attended and denied they were management meetings, with agendas and minutes. "It is very boring and lonely in Shirebrook," Mr Ashley said. "You know what we do after work? We go to the pub after work."
Then there is that expensive game of spoof. Mr Ashley said he once played the game of chance with an investment banker to settle a £750,000 dispute over legal fees connected with Sports Direct's flotation.
"I had the opportunity to save Sports Direct £750,000!" he said. "I either had to pay or I could spoof for it."
He lost and had to pay up, but remained unbowed. "Yes the City may laugh at me for the next 15 years, but yes - I would do it again in the morning!" he said.
He is also a man who is not good with mobile phones. "I periodically lose my phone, destroy my phone, damage my phone... Whatever happens to phones happens to my phone," he has said. And whenever one phone is out of action, he asks Sports Direct to give him another one. At one time he had a box of 50 of them in his office.
Mr Ashley's ownership of Newcastle United has also not been without drama. Since his purchase in 2007, the club's progress has not been for the fainthearted.
They were relegated in 2009 and 2016, but returned to the Premier League for the 2017-18 season after winning the Championship title the preceding year.
It was never entirely clear why Mr Ashley bought the club, as he had no previous connection with the team or the area. But in the early days, he would sit and cheer among the ordinary travelling Newcastle fans in his black-and-white Newcastle shirt.
He told the News of the World that he bought the club "to have fun", attracted by the gung-ho, take-no-prisoners attacking style that the team adopted under manager Kevin Keegan in the mid-1990s.
It's not a bad analogy for the way Mr Ashley runs his business.