The last time I tried to fly into Duxford having PPR'd one week ahead, one day ahead and on the day (all with a positive reply) I was told in the overhead that the airfield was closed to visitors ( no emergency mentioned just the manager told atc they were a bit busy for GA) and to PFO somewhere else. I hope the management has changed since then. I've never really trusted the place since. Please tell me it has all changed.