To make it more helpful for others, it might be an idea to say any you know of in the area. Since you have played for the county (as stated in other thread) you must know at least one club (and probably more) in the area.
i know about a club called deane and one club that plays inthe smithills centre. I have only played county level matches twice.
useful link list of clubs in lancashire from the badminton england site http://www.badmintonengland.co.uk/fl/counties/clubsforcounty.asp?ct=24 Good luck
I think this is probably the most accurate list at this moment in time: http://www.btinternet.com/~stevefanning/BadmintonFiles/ClubInfo.html
One of the thriving clubs in Bolton is Forrest. Search online for Forrest BC Bolton and you will find a lot of info. Paul