Steel magnate Lakshmi Mittal's £14.8 billion fortune has made him Britain's wealthiest-ever person, the Sunday Times Rich List has revealed.
Lakshmi Mittal runs the world's largest steel company
Mr Mittal made headlines after mounting a takeover bid for his main rival Arcelor earlier this year.
Roman Abramovich, the Russian who has bankrolled Chelsea Football Club's glory run, is second in the list with a £10.8 billion fortune.
The two businessmen are among 20 on the list from overseas who live in the UK.
Mr Mittal has faced criticism against his firm's proposed takeover, with the Luxembourg and French governments opposed to the bid.
He previously faced controversy when it emerged that Prime Minister Tony Blair wrote a letter supporting his bid to buy a Romanian steel firm.
The letter was written after the tycoon had donated £125,000 to the Labour party just before the 2001 General election.
However, both Mr Mittal and the Labour Party denied that there was any connection.
The rich list includes a record number of 54 billionaires born, living or making their money in Britain or British territories.
Sunday Times Rich List Top Ten
Lakshmi Mittal - £14.8 billion
Roman Abramovich - £10.8 billion
The Duke of Westminster - £6.6 billion
Hans Rausing - £4.95 billion
Philip and Tina Green - £4.9 billion
Leonard Blavatnik - £4.6 billion
Srichand and Gopichand Hinduja - £3.6 billion
David and Simon Reuben - £3.2 billion
Sir Richard Branson - £3 billion
John Fredriksen - £2.8 billion
The wealth of the country's richest 1,000 is also at record high levels, now standing at £300.9 billion, up from £249.6 billion last year.
This represents one of the biggest year-on-year increases since the Rich List was first published in 1989.
Researchers also found a 36% rise in the amount donated to charity by the 30 most generous benefactors.
More than £453 million was given away this year, compared with £333 million in 2005.
Elsewhere in the list, The Duke of Westminster finished third, having enjoyed a £1 billion rise in his fortune to £6.6 billion.
In fourth is Hans Rausing, whose fortune, which includes family wealth, has remained the same at £4.95 billion thanks to his interests in the food packaging industry.
Husband and wife
Making up the top five, are Philip and Tina Green, the highest ranked husband and wife team, who have amassed a £4.9 billion fortune.
Mr Green runs a retail empire encompassing BhS, and, under the Arcadia umbrella, Topshop and Dorothy Perkins.
Russian businessman Leonard Blavatnik has jumped 19 places to number six with a £4.6 billion fortune made from interests in oil and other industries.
Brothers Srichand and Gopichand Hinduja, whose joint wealth of £3.6 billion from their global finance, telecommunications, film and oil businesses has seen them rise to seventh.
David and Simon Reuben, also brothers, are at eight having made £3.2 billion from property interests, entrepreneur Sir Richard Branson is at number nine with a £3 billion fortune and Norwegian shipping mogul John Fredriksen, with a fortune of £2.8 billion, makes up the top ten.