This is the latest twist in a very long-running, high profile divorce saga. Four years after being ordered to pay his ex-wife a £17.5 million lump sum and around £300,000 per year in maintenance, Mr Prest faces a prison sentence if he continues to fail to pay.

It is vital for any divorcing couple to obtain a binding court order which deals with the division of their assets. This gives them the option of court enforcement action, should it ever become necessary. Not even oil tycoons are above the law!