Thanks gents ..... wisdom as always. Had a look and there looks like some residue on the wheel.
I have the parking brake adjusters i am needing done so might get them to do that while they are in there:
https://www.ebay.co.uk/itm/321749453357?ul_noapp=true is it worth just getting a rebuild done on the rear calipers then ?
On the calipers is it worth a rebuild or just replacing them. Doesnt look like that much of a price difference ?
https://www.ebay.co.uk/itm/REAR-L-R-...4AAOSwWiNaojNc
or just get these:
https://www.ebay.co.uk/itm/FITS-VOLV...03b074c18e39d4