Thank you Andrew. Couldn't work out how to get started on dismantling my storage heaters, searched the internet and couldn't find anyting useful, then found your post and less than an hour later the first one is off the wall and ready for the tip!
Pauline
October 2013
undo the front two screws in the both legs, these hold the bottom of the cover in place. Then undo the phillips head screws along the top - you may have to lean it forward and take off the back cover by unscrewing all the screws down both sides to do this