As far as I’m aware the Scampton Heritage Centre is still open and here is a recent web listing for them https://www.visitlincoln.com/things-to-do/raf-scampton
Where the ‘aretfacts’ have come from who knows. I understand that there were some items displayed at the ‘Dambusters Inn’ (?) public house in Scampton village, which I believe did close and I heard rumours that some items may have gone missing. I also understand that this pub has since re-opened under different tenancy arrangements.
Another ‘Dambusters’ location that has also closed is the Derwent Dam Museum in Derbyshire; I am aware that NAM has recently recovered some items that it had on loan to this particular site.
I hope this information might assist!