Non-UK & Non-EU Socket Outlets used in the UK

Hi All,

This is my first post so excuse me if I do something wrong.

I've been asked to make some special plates for a hotel that contain multinational sockets.
I have always presumed using EU sockets was acceptable under the harmonized standard but the standard specifically says 

511. NOTE 2: The use of foreign national standards not based on an IEC Standard, and/or not compatible with the safety provisions
of BS 7671, is not recommended.

The job I've been asked for is to add Type I  AS 3112 (Australian) & a Type N SANS 164 (South African) mains socket along with other connections and switches.

Although the items carry approval of their native country, can they be used or is the entire safety obligation on the specifier and installer?

On the flip side of this question, can I do a similar job in France where they want small BS516 round pin plugs?