LL is currently undergoing a series of taxiway modifications to accept the A380 but at the moment there are very few Code F taxiways actually activated.
If a A380 were to come in, which it hasn't, then certain taxiways would have limits put on them as when the Big Bus moves around the airfield, the current Code E taxiway centrelines would not provide adequate clearance. The first one was due in in January for comaptibility checks but as the programme has gone back six months, this date may have slipped.
P7