You will be looking at around £200-250 + vat for labour. Price of the clutch purely depeds on what you are looking at. If you're within a budget, would recomend going for an Exedy or AP, steer clear of Helix
As for somebody within your area, we are based in Norfolk, other than that you have Rich@RG Motorsport near chelmsford or TDi at Thurock.
Hope this helps
Lloyd :-)