DavidGordon10 – I must say, since I discovered the express X26 bus service (costs me £1.40 and takes 75 minutes to get me from home, SM1 postcode, to the Heathrow bus terminal), I haven’t used any other way to get to LHR.
As a diehard motorcyclist, what I do appreciate are the free bike parks under or adjacent to just about every airport terminal in the SE. Certainly Heathrow, Gatwick, Luiton and Stansted. Rock up, chuck bike gear in the panniers, unstrap hand luggage from back seat, walk into terminal. Brilliant.