I used to live in and around Northampton, and at Corby for a while when I worked at the Co-op in Kettering.
I don't remember seeing any live acts at the Tin Hat, but I was more an occasional visitor than a regular. Always thought the George was really friendly too - OK you could tell if trouble was expected by the things that were stuck in waistbands and belts, and at Blisworth everyone drank Newcastle Brown so they had a bottle handy - but I took that as being par for the course in those days.
Incidentally, I'm going on a nostalgia trip next friday - a County Soul Clubs Reunion at Wellingborough, with DJ's from venues such as the George; Tin Hat, Freewheelers etc, etc.
The scene in Kent is pretty good mate, top 2 venues IMO are "Stolen Hours" at Ramsgate/Margate, and Kent Soul Club at Rochester. Plus it's easy travelling to Bisley, Lightwater, Farnborough etc.
Recently travelled to Rothwell for the "Cream Cracker", a nite run by another ex sapper - Kev Such. In fact there were 5 or 6 others there too but I'm useless at remembering names.
PM me Derek, if your ever coming back down South.