Towing onto stand
At BHX there are a few (too many!) diffrent rules for widebody aircraft taxiing onto stand, depending which stand they are going onto, the aircraft type and time of arrival.
Stands 40-42, 747 and 340 aircraft are generally towed onto stand however it is all based on yet blast affecting the stands behind. (activity of the T2 aircraft and ground vehicles at the time, i would assume). All other aircraft taxi as normal.
Stand 56, 767-300 are stopped short and pulled on by a tug due to the airbridge being a tad close to the engine when using Door 2
Stand 58 for the Air India, depending on the arrival time this aircraft may have its engines shut down at the end of taxiway V and be towed in due to the closure of taxiways U and T between 11pm and 6am.
Hope this helps with your querey.