Personally I'd go for the very mormal method of picking up at the meter box.
Despite what others say, CU's IP rated for outdoor use do exist from very reputable manufacturers and many many thousands of them are in use for the purpose.
Probably no more ugly than the EV point.
Or do a decent job and add an enclosure, such as a meter box to match the existing to take the CU and EV point.
The enclosure will be suitable but the devices in it will not be.
The devices in it will need to be pollution degree 3 or above to be used in an outdoor enclosure.
Those made for consumer units are not.
While such things do exist, they are made to BSEN60947-2, and they are also intended for use by what is defined in BS7671 as 'skilled persons' which is entirely out of the scope of a domestic installation.
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