Alberts Growbag
Perhaps you need to get a life! If you have a clearance to proceed along a taxiway, it is implicit that you have the room to do so unless advised otherwise - particularly where there is SMR in operation. The only exception to this should be when the ground controller advises caution when taxiing due to other aircraft - THEN the responsibility passes to the pilot. Otherwise, the ground controller is responsible for separation. Maybe LHR Director can confirm.
You try and judge accurately, in the dark, the relative positions of your wingtip and another aircraft's stabiliser. It is virtually impossible.
Can you even see the wingtip from the cockpit of a 767?