Ring them.
You'll be lucky to get an e-mail response in their "advertised" two-week reply time (if at all).
[that was for e-mail, sorry]
Give them a call before you send anything in writing, they'll answer all your queries, very helpful bunch.
[edit to add: it'll take them a day to reply to you in writing to acknowledge receipt of whatever docs you send them. But if there is a decision to be made on a specific case.. it can be a while. I waited two months to have the final decision on my case (not to do with this thread's subject though). I take it you're in no hurry though..]
Last edited by Eddie_Crane; 1st May 2006 at 15:44.