Alloy rims - Centre bore alteration

[PaulV]

I have picked up a set of Compomotive alloys to use on Targa rallies and the like.
The snag is that they have too small a centre bore - 56.1 and I need 60.1.

Does anyone have any recommendations for places to get them machined?

I am based near Newbury, but happy to travel a hour or so.

Thanks