In some areas of the country it's a simple chat over the phone, and they send you the paperwork.

In London it seems it's an actual interview.

But you're lucky Mark, as the office where the interview will be held is just up the road from you, in Upper Tooting Road

http://www.recruitmentcentreuk.co.uk...-rd-id112.html

From past experience, I'd wager that you'll be the only people who won't need an interpreter !