Right, some findings after a rather long time on the phone, and all seems great!
Water - spoke to Thames water, there is a fixed charge of £325 per year for water, i just need to let them know when i will take ownership so they can bill me. The water supply is connected and working as far as they are concerned, it must be turned off internally.
Electrical - Spoke to southern electric who are my supplier here, and they have confirmed that the supply at the new house is active, and that all they will need is proof of purchase of the house and they will wipe the slate clean at the new address and transfer my bill over from here.
Gas - Spoke to british gas, who looked it all up, confirmed that there is an active supply with southern electric currently, and talked me through how to turn on the gas meter myself. Then called southern electric back and they said they can simply tack the gas bill onto my electrical bill, and i will need to give them a reading from both meters when i move in.
Phone - Spoke to BT home movers. They have confirmed that there is a stopped line already connected at the new house, and i can simply transfer completely free of charge from here.
Result
