Our local Tesco's were selling their Ultralight sleeping bag for just over £13 when I was there last night. I was going to pick the last one up but I already have their microlight bag which is good enough for most needs.
The ultralite is great for summer, but unfortunately summer only, you will still have to have something thicker for spring and autumn, and something a lot lot thicker should you decide to camp during winter.
------------- Steve
Look into my eyes, not around my eyes but into my eyes
The one in my local Tesco is 12*C comfort, something like that?
It's a pity they don't have the down one they were selling last year because that's the same weight but 3-4*C comfort (and I've used it at those temps).
Amazing family weekend with old steam engines, classic car displays, market stalls, and full catering and bar. And camping on site - Save £25 by booking in advance.