Memory foam king mattresses can be found through local furniture retailers. There are online retailers that offer those products, but often only have a limited shipping radius.
A Serta brand memory foam mattress can be bought from Leon's, The Brick, United furniture Warehouse, Sleep Country, Sears, Sleep Dreams and Overstock.
They do relieve pressure on the back. If you like your current pillow top mattress, you could go with one that is a memory foam mattress at it's core with a pillow top cover over it. Very comfortable. See the link below for the one I own. Very comfortable.
There are many including: Rectangular. Single. Double. Soft. Firm. Foam. Memory Foam. Feather. Latex. Any colour could be used as an adjective for a mattress.
Memory foam mattress covers are widely available at brick and mortar stores as well as online shops. These can be found at Sears, Target, Kohl's, Walmart, Overstock and Amazon to name just a few.
DreamCloud: the luxury hybrid mattress combining the best of latex, memory foam, tufting and coil technology to provide the best sleep money can buy. Go to this link ...delete the space cut t.ly/yz1JDFI
It is not recommended to fold a mattress. Folding a mattress can do damage to the border wire around the edges of the mattress and the wire could begin to poke through the fabric. Ulitmately folding a mattress could make sleeping on the mattress uncomfortable.
Yes there are plenty, you could go online, you could go to a mattress store they actually have displays and tools that show you the difference between both. That would be your best bet is to go to a mattress store and see it in person.
Products made by Visco may easily be ordered online. Amazon have these in stock as of this moment. One could also check out the official website: Visco Memory Foam Mattress.
A memory foam mattress in any size can be purchased at any mattress store such as American Mattress. Temporpedic also offers this type of mattress although they are quite costly. Another option is to purchase a memory foam mattress topper.
One can find a top memory foam at local retailers such as Walmart, Bed Bath and Beyond, AAFES, the NEX, and Target. One could also buy online at sites such as Amazon.
You put the electric blanket on top of the mattress topper. If you put the mattress topper over the electric blanket you could start a fire. So the electric blanket goes on TOP of the mattress topper.
Huntress and Ergoflex have outlets in the UK. Websites such as overstock or ebay also carry kingsized memory foam mattresses for delivery within the Oxford area.