Do not by from Solent tools as the one they have listed doesn't fit, the teeth are too close together.
The right size is 501-3m-15 HTD as I've just bought one from eBay and it works.
I bought a Stanley Bridges lathe the other day but I can't find much information about it. I know it's missing a few bits, like the tool rest and drill but I wondered what else it needs to get it back to a working condition. Any information would be greatly received.