Reply from our Silentnight Expert:
Yes you can use an electric blanket, however it will change the comfort level of the sleeping surface. The electric blanket will form a barrier between your body and the memory foam, therefore, it won't be able to mould to your body in the same way. This is something you will have to bear in mind, particularly if you have bought a memory foam bed for the special way it supports and comforts you as you sleep.
Please ensure you also follow the guidelines for safe use of electric blankets supplied with the product.