Sullivan had a tendency to write scripts that were too long, meaning a lot of good material had to be cut. Shortly before filming of the sixth series began, he and Jason requested that the show's time slot be extended and it was agreed to extend its running time to 50 minutes. This required a 40 per cent increase in the show's budget, and coincided with the show becoming one of the BBC's most popular programmes. Robin Stubbs became the costume designer for the sixth series, and was responsible for getting Del's attire to match his new yuppy image. His new suits cost around £200 each and were purchased from Austin Reed in Regent Street. The rest came from stores such as Tie-Rack and Dickins and Jones. His jewellery was replaced each series because it was very cheap (the rings with "D" cost 50p each).