Corner Sofa with electric recliners on each end (Osmaston DE24)

massive DFS corner Sofa. I have been unable to unattach them (they clip together) to remove for cleaning exc on my own as it is heavy and the leather has got a bit dry and cracked in a few of the areas where the leather meets. Will need a clean - Might be able to arrange delivery if you ask. but this thing is BIG! elec recliners each end that work fine. The large recliners go into 2 pieces for easy removal.