Bloody hell! Spent an hour rearranging the bikes, getting tools laid out, a bucket for parts, all ready to go, popped upstairs to check the caliper torque, 38Nm, a few youtubes on the process, just in case! The first one the guy shows how you replace them with a set of pointy nosed pliers, you don't even take the calipers off! I watched a few others, one idiot, This is Youtube for you, he pulls the back wheel off to get easy access to the caliper, unbelievable...
I'm gonna have another coffee and go get my pointy nosed pliers. Oh I'll wash out the piston area with a bottle brush and some mild soapy water, don't want to push those pistons back in with all the crud on them. And I'll push them back with some plastic tangs I have. Will be a lot easier with the rotor to lever off.