Maybe a bit late but going to say it for anyone else that might be searching

The wheel specialist - St Albans
http://www.thewheelspecialist.co.uk/...ons/st-albans/

Did a fantastic job on mine while I waited, It did take all day but most of the time was removing existing Pcoating and waiting for a set of tyres to turn up.
17",Charcoal/Anthracite, Full refurbishment £65

also

JP polishing - canvey island
http://www.essexalloywheelrefurbishment.co.uk/

Did some alloy welding for me £40 but he can't do it while you wait.