If you can tear yourself away from the main event the museum itself is well worth a mooch around as well - they have the - (or one of the) - MK14 prototype(s) there and a few other Sinclairy bits and pieces - I thought I remembered there being a National Introkit (the system from which the MK14 was derived) there as well, but I don't think Tim managed to spot it last time he was there so maybe I was confusing it with TNMOC at Bletchley, which did have two examples of the Introkit.
Edit: Looks like they think they do have an Introkit but not on display. Maybe if you gave them advance notice they might dig it out for the SCAMPers to have a look at.
http://www.computinghistory.org.uk/d...tems-See-List/