Yesterday, I installed a new ebc rear disc and pads. You don't realise how much they wear down as the new pads and disc barely fit in the caliper, and there's barely any movement in the pedal. I bet when I rode it next it'll feel like I'm stamping on the brake... I also cleaned the abs ring which was looking tatty after seven winters.
At around 53,000 miles the rear disc measured 4.3mm (minimum is 4.5mm) and the new one measures 5mm.
Some pics: