Hiya
From what i've heard it's very formal and you are getting questions fired at you left, right and centre!! Also you need to give a presentation which should last around 15mins but they never do!!
I've also got a interview soon for No1 to be based in SOU im currently in GLA with them.
If you want any other info pm me and i'll c what i can do for you.
Good luck!!
Party_Girl