I've copied your link across to the UK based vintage wireless forum where there is a small subsection dedicated to vintage computers - the membership of that forum is predominantly in Britain, where most MK14 owners or ex-owners will be.
Some nice links in the info on the page below the emulator as well: I'm currently (very slowly) building a version of Karen O's PIC based hardware MK14 emulator, and still have my original MK14 as well.
do you have a link to the forum?
Looking for Analog Computers, Drum Plotters, and Graphics Terminals
A link to the UK vintage wireless forum:
I must stress that the forum is almost entirely concerned with vintage electronics meaning, radio, audio, TV, test gear and other miscellaneous vintage electronics primarily from before 1980 with a strong emphasis on valve (tube) based equipment but it does have a subforum for vintage computers with some interesting current and past discussions about the MK14 and other machines which were popular in the UK.