A bit OT RNHF but what's the score for flying into Yeovilton to visit the museum? I have crown indemnity on the aircraft.
As long as the visit is planned when the airfield is open for normal business it is not usually a problem. Just phone the Air Ops number listed in the Pooleys or the BINA and book in with them.
If it is a weekend or outside normal operating hours this won't be possible I'm afraid as only Yeovilton Flying Club and Heron Gliding Club are permitted to operate when the airfield is closed.