Posted by Jon Cameron on 10/04/2018 07:56:32:
I've been told it's a CL350, an upgraded version to the 300, with larger motor and digital speed readout. This is what printed the question. The circuit board I think is the same used in the C3 with the 350W motor which I am told this lathe has.
The Lathe is (almost certainly) a Chester Conquest Super, essentially a SIEG C3 (not to be confused with the SC3)

It isn't the Clarke badged version.
http://www.chesterhobbystore.com/conquest-lathe-super-3966-p.asp
400W brushed motor, so a C3 controller board (NOT an SC3 brushless controller board) should work.
Neil
Edited By Neil Wyatt on 10/04/2018 12:58:19