Caught a 111 back-up on an EDI-LHR shuttle once. Got the jump seat on the way down. On final at LHR the captain pointed out the aircraft in front on the ILS was the Trident that had departed on the scheduled flight when full. He was determined to beat it to the gate so on touch down full reverse and braking, turned off the runway and got in front of the Trident on the taxiway. Captain then gave a big "YESSS!!!!".