101 had to loan a VC10K to Boscombe for some receiver trial or other - the usual handbag session between Brize and Boscombe over who should fly the aircraft resulted in a Boscombe crew being allocated.
Off they went to the North Sea and trailed the hoses. The left trailed as normally, but the right went to full extension, kept going and departed.
It wasn't due to any error on behalf of the Boscombe crew, apparently it was a failure of the jettison assembly. But did we give them any stick about their trip? You can probably guess! They'd taped the CCTV and intercom, so we saw and heard the whole thing in the crewroom afterwards!
Bisto was indeed a 'bloody nice chap' on 101, but rather like Tim-nice-but-dim, he only had Harrovian levels of mathematics. After he once announced "You can't have a minus minus a plus!", he had the task of sorting out the imprest figures taken over by his long-suffering captain!