British plugs are just better anyway. The rectangular pins have far better contacts mechanically and electrically and they're arranged in a triangle so the plug can't wobble its way out.
- The outlets have shutters preventing access to the contacts, until the longer earth pin is inserted
- The live pins are on the bottom, making contact harder if it's partially pulled out. And the live pins have sleeved sections so even less live metal is exposed.
- The cable drop is at 90 degrees, typically causing less pull on the plug
You pay for it though, both in terms of extra manufacturing costs (presumably) and weight/bulk. Compare the north american apple usb-c power adapter to the british one:
- The outlets have shutters preventing access to the contacts, until the longer earth pin is inserted
- The live pins are on the bottom, making contact harder if it's partially pulled out. And the live pins have sleeved sections so even less live metal is exposed.
- The cable drop is at 90 degrees, typically causing less pull on the plug