I just had another look at the website for
that museum I mentioned recently and noticed that they can be hired. No sign of pricing information or anything, but you can hire the place out for functions, and what's more, you can even have the engines running through your event!
If ever a steampunk / victorian anachrotech style LARP was to be run, it is a place that should be looked at as a venue.
As an aside, I'm kind of vaguely toying with the idea of going along and perusing it on Sunday. They're open, and all of their engines (and their short railway) are running and I don't recall any specific other plans. I even have a train ticket that gets me there without me having to pay any more than I already do.
Anyone else interested in giving it a look?