Two things can be true at once: Sleeper sofas are a feat of engineering, and they can be the bane of your existence. It’s a marvel to fit a bulky piece of furniture inside another, equally bulky ...

That’s why we asked 4,212 Which? members to rate their sofas. Our unique survey put some of Britain's favourite brands to the test, including DFS, Ikea and John Lewis. The results reveal the ...