As an IWM spokesman said regarding another exhibit (related to the Pan Am Lockerbie bombing):
the museum’s remit is “to cover conflicts involving Britain, the Commonwealth and former Empire from 1914 to the present day, this includes acts of terrorism.”
It's mighty lucky that they are holding on to examples of the HS Trident, HP Herald, the Virgin Atlantic Flyer balloon gondola and other civil exhibits which have obviously played an obviously unpublicised and stealthy role in conflicts that Britain has been involved in.
