Sorry for the delay with an answer..........which is short and sweet..............Binned it!!!
Thanks again.
Gordon T
February 2019
Hi Gordon, did you ever find an armature for your saw?
Karl Roberts
September 2017
MacAllister stuff is a B&Q brand
Solent Tools sell some B&Q spares
023 8057 8057
I somehow doubt that you will ever find an armature - I suspect the the motors that power these things are bought-in items from a specialist motor supplier in China. But you never know...