Taking the GRE in London?

Anyone know a place where I could take the GRE test in London? Advice welcome.

I took the GRE in London in January 2007 - I believe there is just one test centre in the UK where you can take the GRE, which is in Central London. I think you can schedule a test online, but I remember having to call a number in the Netherlands to do it, so I'm not sure if you still have to make an international call or not. According to the Prometric website (through which you can book the test), the London test centre address is:

PROMETRIC, 2ND FLOOR
PELLIPAR HOUSE, 9 CLOAK LANE
LONDON, GBR EC4R 2RU

Similarly, has anyone taken the LSAT in London? I'm debating if I want to take it in London or just go back to America to do it.