Russia's eight richest men / Azerbaijan-born Alekperov At London Metro

Russia's oligarchs have seen their piggy banks shrink 70 per cent in a year, according to the latest Forbes magazine survey. The number of billionaires slipped from 110 to 32, while their collective fortunes have sunk from £315billion to £100billion. Russia's eight richest men and their fortunes and (in brackets) what they used to be worth.

Mikhail Prokhorov - £5.75billion (£12bn): The 44-year-old playboy sold a stake in mining company Norilsk Nickel just before the financial crisis.

Roman Abramovich (pictured) -£5.15billion (£15bn): The 43-year-old Chelsea owner was the second richest in Britain prior to his losses.

Vagit Alekperov - £4.7billion (£7.9bn): At 59, Azerbaijan-born Alekperov is the president of leading Russian oil company Lukoil.

Mikhail Fridman - £3.8billion (£12.6bn): Fridman, 45, co-founded the Alfa Group which sold half of its oil business, Tyumen, to BP in 2003 for £3.7billion.

Vladimir Lisin - £3.15billion (£12.3bn): Specialising in the steel industry, Lisin, 53, started his career as a foreman at a metal works.

Alexander Abramov - £2.65billion (£7bn): The former scientist, 50, has amassed the largest steel and iron empire in Russia and employs 125,000 people.

Leonid Fedun - £2.6billion (£3.9bn): The 54-year-old former military man turned financial whiz owns Spartak Moscow football club. He is Alekperov's right-hand man at Lukoil.

Alexei Mordashov - £2.6billion (£12.8bn): Mordashov, 44, is the main shareholder and chairman of Russia's second largest steel company but it recently shed 9,000 jobs.