The Chartered Institute of Management Accountants (CIMA) has written to the prime minister protesting against the extradition to the US of the so-called 'NatWest Three'.
In the letter, a copy of which was sent to AccountingWEB, the organisation criticised the fact that David Bermingham, Gary Mulgrew and Giles Darby are being extradited according to a treaty which the UK but not the US has signed.
CIMA said it was concerned that the action "appears to be effectively unilateral given that the UK has no reciprocal rights".
The three men are due to be sent to the US on Thursday on charges relating to the collapse of energy giant Enron.
They are accused of defrauding NatWest of 4m by advising it to sell part of Enron for less than its real value. After leaving the bank, the men bought the business...