Hello EJ.
If you can provide the aircraft and White Waltham (6 grass runways) is more convenient for you, why not give Upside-Down Flying Services Ltd. a shout on 0118 977 1528. - stacks of current tailwheel instruction from Tiger Moth thro' Super Cub via Jodel, CAP10, Zlin 526 and the like, including Chipmunk.
Good luck. You 'll never regret flying a real aeroplane !