One possible option would be to take Zen broadband and phone now on one month minimum terms and then switch to fibre at your future address with no activation fee http://www.zen.co.uk/home-office/broadband/home-offi...
The Slinfold exchange, Market 1 and ADSL MAX only, doesn't really give you any cheap good quality options: phone would be WLR and broadband 20CN. However Zen would probably fit the bill in the short term and if you are happy with their service then a switch to fibre at the new address would be an option (and you wouldn't be taking on a "dreaded" full LLU service at any stage.)
I don't have Zen broadband myself but I do have their line rental and I can certainly recommend it
Edited by 4M2 (Tue 06-May-14 14:18:31)