For anyone in the UK looking for a new bed, I highly recommend Warren Evans.

Simple, no nonsense wooded frames and great quality mattresses (ours is 11 years old and still going strong with daily use and very, very occasional turning).

And they deliver and assemble them nation-wide (takes them a massive 5 minutes to put together the simple frames).

http://www.warrenevans.com/

We've bought 4 of their beds over the years: our bed, a bed for the holiday cottage we used to own (now at a friends house and the 15+ year old mattress has plenty of life in it yet), one for the guest room at my parents house and now one for my mother in law.