Using 'ground effect' to assist in undoing the nuts and bolts. All the bolts turned before the nuts cracked loose so I had to have a socket either side. That on the bolt head needs to be kept as square as possible and pushed onto the head as much as possible as the socket only fits on about half-way due to a flange in the disc.

Showing the very small clearance between bolt and flange on the old disc (left). The new has more, but it still isn't enough to allow a socket with a standard thickness wall to fully seat onto the head.

One of the old discs not much more than half the thickness of the new, the other is not so thin so probably has been replaced in the past.

Blued disc. Swept depth also seems to be noticeably smaller than the other disc. This is the very thin disc, but I opt for replacing both.

Shiny new calipers, discs and pads

Old pads, overheated side on the right showing them badly crumbled as well as reduced in thickness. Annoying, as they were only replaced a couple of years ago.

Hose clamp. Halfords had two, this was about a pound cheaper than the other, so got my vote. However they are only plastic whereas the others are steel. If they get brittle and break than they will have been poorer value. Also the part that grips the hose is 'V' shaped on these plastic clamps whereas it is 3/16" or so round bar on the metal ones, so probably less harmful to the hose.