Sara - we don't re-visit a location for 3 years. We are going to Chesterfield on Weds 5 Dec 2007 and Wakefield on Weds 11 June 2008 which may be too late for you. These are the closest to you.
The way those things shake is very distracting...
Nearer the time you can either book yourself a place at the presentation by going on line at www.royal-navy.mod.uk - go to News & Events and then go to RN Presentation Team. We have the dates on there but only a few months in advance. There is a video of what we are about on there as well. Alternatively you can send me your name and address and we will send out a letter, invite and reply card about 6-8 weeks before the presentation - your call.
Sorry about the distraction but I quite like them!