Oh God yes there is!Anything that comes up out of the ordinary on a discovery?
On a serious note: When doing the brakes I have found that the cheaper generic parts store pads and rotors would squeal and set off The Three Amigos. If you don't know about the Amigos do a search. I think the Genuine LR pads and rotors are made by a company called TRW so try and get TRW's if you can. I got my last pads and rotors from Will Tillery (TRW). He has good prices and knows his stuff. I'm sure others on this forum have good suggestions as to what brands of brake parts to get.
Other then Amigo related problems there is not a great deal special about the brakes. I'm pretty sure that you will need a 3/4" and a 9/16" 12 pt socket to get the caliper carriers off. A c-lamp to compress the pistons, caliper lube, brake cleaner and a socket set is all you should need.