It happens that Jim GM4DHJ ... formulated :
anybody else got ripped off by those cheap £12 30w chinky LED pir gargen
spotlight that only last a couple of days if lucky?

I have bought a small number of other types of LED. I think the thing
is to look at the spec. and make sure they are suitable for at least
240v. My none dimables suggested a range of 90 to 265v.