I had to get one around about October.
I looked at both Experian and Equifax, and as far as I know I went with the latter.
My bank was happy with the £2 online report. This is about 20 pages long and you can get it printed off yourself. You have access to it for approx 1 month I think after you pay for it.
There are more expensive options but the £2 might be ok.
If you need any more information, get back to me and I'll see if I have any emails saved from them.