Azathoth, a good amount of the airsoft guns sold in the UK are downgraded by the retailers because that's what the law requires, which makes a great portion of all guns in the UK non-factory-direct by your standard. Would you insist on adding some sort of title to them as well?
The distributors are ultimately authorized by the manufacturers to make the downgrades. Whether the downgrades can occur requires permission from the manufacturer. SafeAirsoft as a moment recommends the downgrade, but it doesn't decide or participate in whether it actually happens.
Ultimately, higher FPS equal higher risk of injury. The distributors recognize that risk and downgrade the guns to minimize it. It is our position that if players want to play at a higher FPS, they're perfectly welcome to, but they must make the effort to make the gun hotter themselves.
"The Bird of Hermes is My Name, Eating My Wings to Make Me Tame."