As a warning, Terminal 5 have introduced new passenger pick up rules.. (not sure whether they have been published or just being implemented)…
Signs now direct cars to the new pick up area, inside the car park with associated parking charges. My system for collection is to call my driver who will meet me by a designated door number, I jump in & off we go.
Monday evening… a PC (got nothing better to do at 9pm at an empty drop off zone))… threatened to fine him £40 and was extremely aggressive about this new revenue opportunity.
You will see that the airport have now blocked off with barriers, part of the drop off zone.
So it appears Terminal 5 is going the way of T3…. perhaps there will be drop off charges soon as well.
I would still favour a drop off/pick up area, with 10 minutes free, then a charges of double the car park rate… that will get people to move on…