I stripped my front brakes down earlier this afternoon. The fronts are relatively simple, the caliper has two 7mm allen bolts holding it into place, just ensure you're careful with the retaining clip as they can ping off with some force. The caliper should then come off, be careful of the pad wear sensor on the nearside if you have one.
The contacting surfaces were absolutely bone dry and covered in brake dust so I just cleaned them up, re-slipped them and re-fitted them. Seems to have done the trick but time will tell. Took the opportunity to check the wishbone and drop link bushes and the CVs too, all looks good!