In the case of what is required here and not going into 18th edition regs and boring everyone to death. RCD protection should be used. So if you have a consumer unit with a main RCD then you could install a standard outside IP rated 13a socket or 16a blue plug if there is no RCD protection at the consumer unit then a RCD IP rated socket or a 16a RCD 240v 3 pin blue socket should be used.
after saying all that though and sounding like mr belt and braces in reality it’s your house you can do what you like and wire it how you like and it will work.
Bit like tyre load ratings.. it’ll probably be alright until something goes wrong and you have to explain to a insurance company or the law.
@JOG not all of that was for you.. just went off on a bit of a tangent