I am saying it is a poor cartridge for general deer use, perhaps as a fellow UKer said "adequate" for Roe but certainly not for larger deer. Best suited for varmints and the like. In my opening post I said that if you could not take what you were hunting with a 223 it was time to step up to a 30 caliber.
Ok - that in itself is a relatively uncontentious statement.
But what then do you say to the average UK rifle hunter, whose primary quarry is roe, who does some foxing for the landowner, and who may get a chance at something like fallow or red hinds once or twice a year? And who has to navigate a licensing system that makes it extremely difficult to have multiple calibres, and which regards anything bigger than .243 with the utmost suspicion? Who also has to deal with a very sporadic and unpredictable ammunition supply, such that of they want a degree of certainty that they can find what they need, they need to stick to a really common 'vanilla' round? Who gets very little opportunity to practice, because ranges are extremely rare, bullets and fuel fearsomely expensive (more than double what you pay), and the few times he does get out, he wants to concentrate on getting some deer?
In that context, the .243 emerges as an almost unavoidable yet still very servicable all rounder. Easy to shoot, effective on a wide range of quarry, easy to feed and easy(ish) to get permission for.
I agree that, in less competent hands (such as my own), it reaches its limits with bigger fallow deer and beyond, but it really is just about the one cartridge that Mr. Bloggs can use as his one centrefire for almost all UK situations.
I know you meant this in jest - but you have the luxury of effectively unconstrained gun ownership, and the freedom to use them more or less as and when you like. We do not, and are forced to make a whole series of very calculated compromises to maximise the probablity that we ever actually shoot anything.
It is just a bit offensive, and smacks a lot of willy waving for the hell of it.