Any question answered...

It's not cheap by any means but if you do decide to fork out the cash then Real Russia in Islington are quick and helpful. I think it's about a hundred quid but they sort everything... It's worth considering a professional service - if you're going to Moscow there's a high chance you'll be asked to produce your visa on the street and you really want to have that shit in order when the time comes...

Ah man, it's the same cost as the bloody flights! Thanks for your help though.