Remove the top panel (two bolts either side at rear). At the top there are two screws attaching the top frame to the rear panel - remove them, and the spring guards too. You may want to reposition the bolts through to the front panel in order to keep maximum rigidity. On each side, a few inches up from the bottom are two blanking plugs. Remove the plugs and the two bolts they reveal. Back to the top, remove the plastic insert which allows the water pipes and mains cable to enter the machine - there are tabs each side which can be held back with a screwdriver blade. Then the rear panel should just pull off...
Tim
August 2014