Despite what everyone else has said, it is possible to book a licensed
taxi (black cab) on a 'capped' fare direct to Heathrow.

Yes indeed: I've used this (to/from E5) when there were several of us
travelling at awkward times. But the OP did say "when one of us is
flying home" so I thought the price might be a bit steep.


--
Robin
PM may be sent to rbw0{at}hotmail{dot}com