hi mate , i would advise against spraying them, they will crack and peel after a few weeks , i would get them shot blasted and powder coated. price about £25.00 a wheel . they will last ages and look alot better.
i dont know anybody in the lakes but there is tec coatings in blackpool who i use quite a lot for my bike parts and other bits , tony is sh1t hot. really good and quickish turnaround.
http://teccoatings.co.uk/index.php
01253 697111
hope this is of help
Regards
Mick