Episode #7.7 - S7-E7
Corrected entry: In this episode Nick rides the pump. However, being Station Officer, he should be riding the pump ladder. The London Fire Brigade always has the Station Officer in charge of the pump ladder and not the pump (it's the Sub Officer who is in charge of it).
Correction: Not so. Until Series 8, when a point was specifically made about it, the Station Officer rode the Pump, while the Sub Officer was in charge of the Pump Ladder. This was consistent through the first seven series.