A key point of the scene between Tracey and Jancis, Darryl's pension adviser, is Tracey's confusion over the date of a large payment. Jancis confirms the payment was made in 1988. However, a couple of scenes later, when Dorien is trying to discover the source of the money, she asks Tracey for 1990's accounts, as that is where a payment made in 1989 will be listed.
In this episode, Darryl's pension adviser tells Tracey that Darryl made a large payment into his pension scheme in 1988. Tracey questions this, stating "It was 1989 when he done the job" - referring to the bank robbery for which he was imprisoned. Although the 1988 date for the payment is indeed correct, it would have been impossible for Darryl to make a payment with money from the 1989 bank job, as he was caught and imprisoned.