Absolutely no problems at all. Especially the rears.
Lightly slacken the hub nut with the car on the ground.
Jack up
Wheel off
2x 17mms on the pad carrier
Get the hub nut off fully
Disc off
Wind back the caliper piston using a screw driver
New disc on with the disc spacer the right way round. Torque up (not sure how much, I do about 175nm)
locking paperclip type thing on the pad carrier off, slide out the bit it holds in.
Pads out, new pads in
Carrier back on, maybe with a touch of loctite to be safe.
Wheel on
Car down
Pump brakes
ZOOM
EDIT: Damn you @
AlexW. At least I got the torque right