I'm in agreement with that. I suppose that the 1968 tunnel may be deemed a part of 'the story', which may lend weight to a conservation argument, weak though.

Dropping door and lintel into the museum would be best - get the thing out of the Hill while preserving it's part.

But as it was a televisual event, well documented (Branded with the little 'S', which I rather like as a logo), do they need to go into the museum at all?

Treating some doors and a concrete block as artefacts is... well it reminds me of the man who picked the 'Alien' props from the studio dustbins to make an exhibition. Will they require conservation?!