The Electric Railway Museum is fairly close (Coventry) to where i live but i haven't been to it until now mostly because it does not open that often. Yesterday though was its first open day of the year and i visited and viewed the great selection of electric trains, mostly EMUs.
Most of their collection is unique and it is a shame that EMUs and the like tend to be neglected by most of the railway preservation movement. Still as long as one survives is all that matters i suppose, its not like we need breeding pairs, though there is safety in numbers. You can see my photographs here, check out their website for the next open day, they are very worth a visit.