Surely the first Nimrod (of the 4 development batch aircraft) was XV226 not 227?
I think XV257 was flown back to Woodford in a stripped down configuration but was NOT returned to service. The accident actually ocurred during Taceval and, thankfully, only had a 42k fuel load for its SAR sortie (having been on SAR standby for the week previously with a full load). I doubt they would have made it with full fuselage tanks... I seem to recall they were airborne for 7 mins - 4 before the fire and 3 after.