After three days in London we want to hire a car from somewhere a little out of London but not Heathrow. Place would need to have good transportation from London (train?) and I guess large enough to have some of the major car companies.
We were also considering visiting Hampton Court Palace and possibly Kew Gardens after pick up so would need to be that general area.
I was thinking Slough, only because it was only largish place west of London I recognised in pick-up options. But think that is maybe too far west.
It is very frustrating on the rental car sites when you don't know where the places are. A map showing locations would be simple to do and a great help but are few and far between.
Staying near Euston / St Pancras in London if thats of any consequence.
Thanks for your suggestions!