[tialaramex]

The UK doesn't really have SWAT. Ordinary people are most likely to see firearm officers with an MP5SF or similar, a black semi-automatic carbine, which a typical civilian probably mentally files as a "machine gun like in a movie" and its main purpose is to act as a visible deterrent and set them apart from "ordinary" unarmed police officers.

Many officers armed with the expectation they might need to actually shoot somebody, not just act as a deterrent have Glocks, because a pistol is the right tool for this job, and they may have also been trained to use a military-style shotgun. But that's about as far as it goes.

If the bad guys have a rocket launcher, in the UK the expectation is that this is now a problem for the Army, not some nutjob with a badge who thinks Judge Dredd is a role model rather than a satire.