Roll off effect on four foot bed

Hi, I have emailed the main office with regard to purchasing a new mattress and received a quick response, but I have further questions. My bedroom is small and so it can only accommodate a 4ft bed. Previously I have only ever purchased cage sprung mattresses (I confess, cheap ones at around the £200 mark that last not quite two years tops each)!

I would like to purchase a pocket sprung mattress from you, however I am concerned of the ‘roll off’ effect that is mentioned elsewhere here on your web site to those that are used to cage sprung mattresses. As the bed is only 4ft wide and it has two of us (1 x 15 stone and 1 x 16 stone) in it, there is potential that either one or both of us could potentially be sleeping close to the edge of the mattress at some point during the night. Have you any recommendations as to the build I should be looking at. We both can, and sometimes do, get warm in bed and as we’ve never tried a memory foam or latex mattress before we are concerned about the potential to ‘overheat’ on one of those. Any suggestions?

Julie, via email, very kindly advised that the Origins Pocket 2000 – 4ft was the same price as the Origins Pocket 1500 – 4ft and that I just need advise in the order that I’d require the higher spring count (which I think we’d need for our weights) and at £435 is considerably cheaper that either the Origins Pocket Latex 1500 (£640), or the Artisan Tailored Pocket 2000 (£795). Do either of these have different edge support that may sway us in their direction for the potential of sleeping close to the edge, over the OP2000. Yours, still very confused. .