Factual error: In a scene in a bar the music playing is Blur's Song 2, which wasn't released until 1998 and a Kula Shaker song which wasn't released until 1996, by which time Nick Leeson was firmly in prison.
Factual error: When Nick fax's over his forged fax to the bank he puts it face up so the camera can read it. He is using a Canon fax machine and they always fax face down. The fax would have arrived blank at the other end, the way he sent it.
Factual error: Before his arrest, the police cars approaching Nick's plane in Frankfurt airport bear Munich (M) number plates instead of F for Frankfurt.