Tex,
Hi just thought I would give you a few suppliers details. Central heating, go to www.bhl.co.uk and have a look, give them a phone call they should be able to help. I have used them many times in the past being a construction company and they just quoted me £1800 for worcester bosch combi, all fittings and pipe, 11 rads and plastic oil tank. Oil tank on its own is about £400. Well worth the look.
As for double glazing go to www.windowsanddoors.co.uk they sell new double glazed windows very cheap and they are pretty good quality. They quote £81 for a 1050mm x1200mm with side opener, delivered in 7-10 days.
Carpet right for your carpets.
B&Q or similar for decorating stuff
Howdens joinery or IKEA for your kitchen, could do whole kitchen for less than £1000, you may even get a deal where they include the cooker and hood. They have these deals on from time to time (howdens)
Bathrooms www.kbb2000.net they are good quality and keen prices, just take a look. Failing that try the basic suites available from B&Q and the like.
Hope this helps, should you require any more help or advice please drop me an email and I'll be glad to help.
Regards
James