You don't get to see these very often, and even more unusual to see the synth with its original builder.
Alan Needham built this in 1977/8 from a kit from Maplin (a UK project electronics supplier still in business) after seeing it demoed at a music store.
There were several Maplin Modular models, the 4600 boasted 4 oscillators, 3 Envelopes/Transients, a nice spring reverb and 2 multi-mode non resonant filters, plus a lot more besides and was patched using a pinboard matrix similar to the EMS type.
Many thanks to Alan for showing it.
Nick Batt