What I did was, unscrew the brake fluid cap so that when your trying to get the pads out the fluid has somewhere to go. Remove pads and replace with new ones. Pump the brake pedal a few times to get the brake fluid back into the system which builds the pressure up, meaning the pads are now firmly in the correct position and cannot be moved. Put it all back together not forgetting to put the cap back on the brake fluid dispenser. Job done.
God, I almost sound like i know what I'm doing