The Tatung Einstein, a computer produced by the Taiwanese Tatung yet designed and assembled in the UK, was an interesting and bulky 8-bit micro, that never really managed to sell very well. Still, it was a proper and quite powerful 8-bit computer that was compatible with CP/M and seemed to prefer disk drives over tape recorders. You can find out more about the Einstein here and here, and you can emulate it with the help of MESS.
To physically own one of those bulky machines, you could have a look at this Tatung Einstein auction. The micro is fully working and comes complete with its original box and polys, manuals, required cables and 2 discs. Seller ships only within the UK.