Just for completeness and to round the thread off:
I bought some uninsulated crimped spade connectors and rubber sleeves from VWP and the crimper I linked to before, from CPC.
Very happy with the whole lot.
The crimps turned up in super fast time from VWP and are nice quality. I prefer the uninsulated ones as they have the 2 clamps: 1 that rolls in like an M to hold the outer cable and 1 that rolls in to grip the actual wire. Like the factory ones do.
The ratchet crimper is a bargain for about £20 - and for the amount it will get used (ie not day in day out) is as much as I'd want to pay really.
IMO the other nice things about these uninsulated crimps is that they look more pukka than their garish insulated relatives .....