I know this won't be interesting to the majority of people but this is the best deal I've found for a good quality cot bed and mattress.
I bought a Cotbed from Babies r Us when I had my last child and I was really impressed by the quality. I also think its really important to get a really good mattress and with this offer you can get a good mattress for £45, compared with around £100 in mothercare.
Don't forget 3% at Quid Co!!
(sorry can't work out how to add the picture -doh!)