Crosby, who was also an adviser to the then British Prime Minister Gordon Brown, later gave up his knighthood and part of his pension after a Parliamentary report was highly critical of his, HBOS Chairman Lord Dennis Stevenson and HBOS CEO Andy Hornby's management of the bank.
He left in December 1988 to join Kleinworth Benson as its in-house lawyer but was only there until April 1989 when he was headhunted by start-up firm Ellastone.
Moore's complaints were investigated at the time (before the crisis) by accountancy firm KPMG, who concluded that HBOS had appropriate risk controls in place; this was accepted by the Financial Services Authority.
He claimed this was because he had told HBOS's board that the bank was taking excessive risks with its aggressive sales culture which was out of balance with its systems and controls.
Although Moore had agreed to the non-disclosure agreement as part of his settlement, he decided to speak out after the crisis because he believed it to be in the public interest and on 10 February 2009 Moore submitted a memorandum of evidence to the UK's Treasury Select Committee, which was investigating risks taken by UK banks prior to the credit crunch.
Moore announced his intention to publish a book about the HBOS whistle blowing and subsequent events called "Crash, Bank, Wallop".