actually T5B has about 2 stands that do have 2 jettys... there will also be a few in T5C to accomodate the A380..
's policy is to use a single jetty for boarding out of LHR
.... but can vary at outstations...
As a crew member is does create a bit of chaos boarding and disembarking at 2 doors.. as inevitably some passengers take the wrong jetty and creates a traffic jam on board during boarding... also creates even more chaos on particular aircraft types such as the Mid J 747 with the WT
+ cabin aft of doors 1.... First and Club are advised to board thru door 1 left and WT
+ through door 2 left.... can you see the chaos??? (WT
+ get on and turn left at D2L... Club get on and turn right at D1L)
Usually its easier to get the right hand side of the aircraft to disembark at D1L and the left side at D2L when there are 2 jettys.... but the look on some passengers faces on the right hand side when they want to cut thru and exit earlier.... it's like you're asking for blood!?