I saw this a few weeks ago. Annoyingly I had no idea the museum existed despite regularly visiting Tonbridge and only living up the road! I hope the majority of the items end up in other similar local museums.
You'd kind of hope so. Read the catalogue now, and I'd call most of it pretty 'niche'. For educational display maybe rather than home wall-hangers (That said, I know little of aviation collectors & have occasionally been astonished what people have in their houses.)
Was it truly a museum, or one man's personal collection ? I even worked in Tonbridge for a short while. Never heard of it either.
I saw a report about it recently, probably on BBC South East news. Old episodes are not available on the I-Player but here's a report from KMTV: Tonbridge man puts his one-of-a-kind Battle of Britain collection up for sale
Not sure about some of the descriptions accompanying the various lots. Included in Lot 419 for example is a railway ticket from York to Church Fenton which apparently is "the nearest railway station to RAF Hornchurch".
