No personal recommendations but a few web searches have shown that the Berkshire Jazz Club meet on the 1st Wednesday of each month at the Swan Inn, Arborfield Cross. Admission for non-members is a fiver and food is available. If this looks as if it might be of any interest, I'd suggest phoning the Swan Inn for more details of their menu.
Link with Berkshire Jazz Listings (includes contact details):
http://www.jazzservices.org.uk/gig/reg4.htm
Link with information about the resident band:
http://www.getwokingham.co.uk/pfriendly.asp?intid=333
Hoping this might help,
Chris