Try this web site
http://www.cpsa.co.uk/find-a-club from the CPSA (Clay Pigion Shooting Association)in conjunction with a map of your route. I live in Derbyshire, England; which is between Manchester and London although nearer the former.
http://derbyshirecpsa.webs.com/clubs.htm I shoot regulary at Yeaveley (nice grounds and club house but sporting only, Lowes Lane; set up for skeet and trap but they do have a sporting setup on a limited scale. Doveridge has the lot and can host big events and has better opening days as some of the other clubs have limited opening. Doveridge has a good skeet and trap area and a sporting system which you operate yourself with a remote control and automatic traps which is more for practice. You should find something via the links I have given. Lagopus.....
