Convicted fraudster and former Liberal Democrat donor Michael Brown has been directed by a judge to start his seven-year jail sentence.
The Glaswegian multi-millionaire appeared at Southwark Crown Court in central London after arriving back in Britain from Spain, a City of London Police spokesman said.
"He has now been sent to serve his seven-year sentence," he added.
Brown, 46, received a seven-year jail term in 2008 at the same court in his absence after he fled the UK to the Caribbean.
The conman was found guilty of defrauding investors of £36m through a Ponzi scheme in which he posed as a bonds dealer with royal connections.
He also falsely claimed to be the son of a lord and a St Andrews graduate.
In addition to renting a £49,000 Mayfair flat and purchasing a £2.5m private jet, Brown donated £2.4m of his profits to the Liberal Democrats in early 2005.
However, despite the money having been acquired fraudulently, the Electoral Commission ruled in 2009 that since the party accepted the money in good faith it did not have to be repaid.
Following extradition procedures, Brown was arrested in January in the Dominican Republic and flown to Spain in April.