I have received a reply,
Dear Clive,
Thank you for your comments and we are glad to hear that you enjoyed the weekend.
The greenhouse building that housed the museum has been unsafe (and not weather-proof) for some time and the bicycles were removed from there some five years ago. Initially they were stored in the cellars of The Hall but were later removed to a dry store off-site at the request of the Alex Moulton Charitable Trust.
The Trust and the Bicycle Company are working hard to secure the future of The Hall and its surroundings and it is hoped that, in due course, the collection will again be exhibited on site.
Many thanks,
Dan