So the build continues, since the initial hanging in of the roll cage the following has now been carried out:

Front and Rear brake strip out and this involved the following:

Removal of the front calipers, discs (which are shot), pads and brake hoses.
Removal of the rear calipers, pads and brake hoses.
Drain of the brake fluid, including kicking half a pot across the workshop floor!
Freeing up and winding in of the rear caliper pistons.

The brakes are now ready for the new front discs and Mintex race pads that are mandatory for the new class D Trophy series. The first problem is the set of grooved and drilled discs I have bought for the front are not permitted so they will now have to go on My MG Express 160 which needs some anyway and an OEM air ordered.