I bought a lot of stuff from Tesco when starting out and have to say it has been great kit!
Up until my last camping trip I was using this bag:
http://direct.tesco.com/q/R.100-2775.aspx
The temperature ratings on it are very ambitious however I would say this is ideal at about 5 degrees upwards but other than that a good comfy bag, doesn't pack up well though.
I was also using their fleece liner:
http://direct.tesco.com/q/R.202-9328.aspx
This is a great bit of kit, it's so soft and really does keep you warm and it packs up very well, only thing missing is a zip but I don't find that much of a problem.
And finally I used to use a 65L Tesco rucksack:
http://direct.tesco.com/q/R.100-8250.aspx
For the money this was a great pack, plenty of room inside and plenty of attachment points outside and basically bombproof. Only niggles with it were that it was slightly uncomfortable as the back isn't adjustable and there are no side pockets or hood pockets, only a big main section split into two with a sleeve at the back of the main compartment
All in all I would say it is great quality kit for the money you pay but more suited to the newbie camper maybe looking to start in the earlier months o spring into mid autumn but for the money I can't fault any of it. I have started upgrading my kit for a bit more luxury but for back to basics stuff it's great