Here are some pretty handy guides with lots of detail into what you will need before you move into your house:
Reading University Living Out Guide:
Or a much simpler, cut down version of this guide with a nice and handy checklist:
"Moving in" guide:
(and respectively, the Moving out guide here)
Of course if you ever have problems then get in touch with your Estate Agents and they will help to sort things out for you.
Also, if you want a simple way to pay for your bills all in one place, check out http://www.glide.uk.com/ (you have to call them for a quote).