But they are now firmly established in the Premier League unlike when Vichai took over in 2010 with the club languishing in the Championship, English football’s second tier.

“He made the club a big Premier League club today,” said former England manager Sven-Goran Eriksson, the first Leicester manager hired by Vichai in 2010.

Leicester were promoted to the top flight by winning the Championship in the 2013-14 season just two years before shocking the world by winning the Premier League.

Unlike many foreign owners of English clubs seen as having little connection to local fans, the bespectacled Thai was known for his unerring common touch.

Leicester City soccer club confirms chairman Vichai Srivaddhanaprabha died in helicopter crash

Fans were treated to a free beer to celebrate his birthday ahead of a match against Newcastle in April this year.

Season ticket prices have been frozen for the past four seasons, while Vichai also donated £2 million (US$2.5 million) to help build a local children’s hospital in the aftermath of the club’s title triumph.

“Leicester City was a family under his leadership,” said the club in a statement confirming Vichai’s death.

“It is as a family that we will grieve his passing and maintain the pursuit of a vision for the Club that is now his legacy.”

Despite his popularity, Vichai remained an enigmatic figure, rarely giving interviews, and preferring to let his son Aiyawatt, known as “Top”, act as the family frontman.

The sight of him arriving and leaving from matches in his helicopter from the centre-circle of the pitch was common.

Sadly, that ritual was to end in tragedy as it was from there he boarded to take off after Saturday’s 1-1 draw with West Ham before the helicopter crashed in the car park directly outside the stadium.

The devout Buddhist was a firm believer in the power of karma, flying in Thai monks to bless Leicester’s pitch and give their players lucky amulets.

And while pumping tens of millions of pounds into the team, club infrastructure and reducing debt, Vichai spent judiciously.

Leicester’s title triumph was built on an exceptional scouting network that plucked star striker Jamie Vardy from non-league side Fleetwood Town and N’Golo Kante and Riyad Mahrez from the French second division.

Kante and Mahrez have since been sold to Chelsea and Manchester City respectively in moves worth more than double the initial £40 million Vichai spent in acquiring the club.

“He (Vichai) is a successful businessman and he tried to challenge himself to get something done,” Top, Leicester’s vice-chairman, said in Bangkok in 2016.

“He said, I think two or three years before, that he wants the team to be a success in the Premier League, and now we are.”

Known for rubbing shoulders with celebrities, his surname, meaning “light of progressive glory,” was bestowed by Thailand’s late king Bhumibol Adulyadej in 2013.

The avuncular Vichai carefully navigated Thailand’s treacherous political waters of recent years, while taking his King Power empire from strength to strength.

Vichai, who was born into a Thai-Chinese family in 1958, established the company in 1989, starting with a single shop in Bangkok and building a multi-billion-dollar empire.

King Power hit the jackpot in 2006 when it won the duty-free concession at Bangkok’s cavernous new Suvarnabhumi airport, and with it a captive market of tens of millions of travellers.

In 2007, a year after ex-premier Thaksin Shinawatra, Manchester City’s former owner, was dumped from office in a coup, Vichai saw off legal moves to break his duty-free monopoly.

In a kingdom where connections count, he firmly belonged to the royalist establishment that turfed out Thaksin.

Before football, his first sporting love was polo, the sport beloved of the international elite, a passion he shared with Top.

Vichai boasted a lifetime membership at London’s Ham Polo Club, frequented by the British royals, and also spent around £30 million in a stable of thoroughbred horses.