And then, if you started at the H cafe, you have the choice of going back to the M40, Banbury, Long Itchington (for a break), Princethorpe, etc, OR
Woodstock, Shipston, Fosse Way, a break at the Hilltop Farm cafe (where many of the players go after practice), Princethorpe, etc.
Not much in it time wise (M40 route would be 10 minutes or so quicker), but the Woodstock route is way nicer. Either way, you have to give yourself about 2 hours from H Cafe, plus a bit for a break.
Shame we couldn't work in a stop at Caffeine & Machine, but you really need to spend over an hour there to appreciate that place (it will be stuffed with bikes and hot cars on a Saturday; great atmosphere, and free entry for bikes!).