I’d get the 250-000 style of QCTP personally. It can be had for around £40, and standard tool holders to fit are around £7 each.
Warco don’t sell this kind, but Arc did.
In answer to Nigel’s point, I’ve found there are many things I’ve needed that neither Warco nor any of the other UK home machining suppliers sell, and it’s almost certain that the source for at least some of what Warco does sell is effectively or actually the same as the sources used by the online supermarkets.