Reliable cab company that provides car seats?

[TheHouseofMirth]

We need to book a taxi to take us to Gatwick and I'd prefer to use one that can provide car seats.

Just wondering if anyone can recommend one?

I think they all can, if you give them enough notice.
The one I organised to collect my cousin who was visiting with her three DDs was ok, though they charged her more than I was quoted (she was too knackered to argue it!), so I am not rushing to endorse them, but they did at least turn up with the relevant car seats, so if you do want their number, PM me. Actually, they booked with the same company but with a different driver and I think he was fine.