Firstly Pop the Hood and open the brake fluid reservoir. Then using a screwdriver or similar tool inserted between the inner pad and the rotor, compress,(push in) the caliper piston as soon as your done close the brake fluid reservoir (the fluid is hyroscopic).

The Caliper is held by slider pins with a 14mm head. The top pin is directly in line with the brake hose,(sadistic design Engineer?). I needed to apply a lot of heat with a blow torch to get these loose. So I used a cheap locking wrench to shield the brake hose from heat!

Remove the pins with a 14mm socket, note the pin with the rubber at the end is the lower pin. Place the Caliper safely way where the hose will not be strained.

The Carrier for the Pads is held by two 17mm bolds, they needed a good deal of heat too before they came loose.