Bit schizophrenic, is Lewknor! It's also been known as Lambert Arms and as Aston Rowant.
The half-mill shows it as open and parachuting (or did, last time I checked).
BUT CAP481 shows it as closed. The best historical information I've been able to glean reckons it was closed before 1985. Maybe it reopened for parachuting?
If you drop in and find it's open, please let me know and I'll update the A4A Airfields List accordingly.