For what it's worth I have a visit to Gloucester planned in October, and an early look through AW didn't look good at all. Since I was looking for a 2 hour booking I've been thinking of trying a reverse booking to see what replies I get, and it might save me trawling through Cheltenham, the Stroud valleys, Forest of Dean, Tewksbury, Cirencester on AW. Or might get rescued by someone touring. If you find anything in the meantime I'd be interested to hear.