@jamesjefferies @GarethDennis if you have visited, donated to or even considered visiting the National Railway Museum in York or other members of the Science Museum Group such as Locomotion Shildon then you have power, especially if you are yourself a member of a professional organisation with a code of ethics that you are required to uphold and adhere to that has provisions about retaliation.
You can write them a strongly-worded letter about your concerns about his ethics, and how that reflects on their organisation that Peter Hendy is the Chair of the National Railway Museum’s Advisory Board. I’ll be posting up what I’ll be sending to them at some stage soon