Peter69 said:

I have always presumed using EU sockets was acceptable under the harmonized standard but the standard specifically says 

That can't be true.

Regulation 553.1.201 requires socket-outlets 'for household and similar use' to be shuttered.

The issue of 'household and similar use' actually covers usage not just in homes, but by 'ordinary persons' under conditions of external influence that may be found in 'household and similar' situations - such as offices, hotel rooms etc. etc.

But ultimately, "general purpose, non-industrial, socket-outlets" in the UK need to be shuttered.

There's also the issue of the Plugs and Sockets (Safety) Regulations.

gkenyon said:

The issue of 'household and similar use' actually covers usage not just in homes, but by 'ordinary persons' under conditions of external influence that may be found in 'household and similar' situations - such as offices, hotel rooms etc. etc.

I acknowledge your expertise in the area of electrical standards Graham, so including offices in “household and similar” situations is something I would never have considered. 
Since “household or similar” is not defined in part 2, one might look to OED or perhaps “houseboat” to get an idea of what  sort of places the term might extend to. 

I was obviously incorrect in my assumption that the term related only to places where people reside as a unit and who are likely to dwell there in permanent fashion. The “similar” consideration might then extend to other places  that people might reside such as hotels, guest houses, care homes where the EAW Regs would be impossible to fully implement. 

I note the term is to be found frequently in the title of standards in Appendix one so I assume you will know about how they describe their scope.

I am interested in this only from the perspective that such matters are discussed in 18th and 2391 classes. So, for example, it wouldn’t be acceptable to have adjustable fault protection in household or similar but one could in an office location, is that incorrect?

gkenyon said:

The issue of 'household and similar use' actually covers usage not just in homes, but by 'ordinary persons' under conditions of external influence that may be found in 'household and similar' situations - such as offices, hotel rooms etc. etc.

I take the point, but then why does it not say so?

In households, typical sockets are just at the right height for curious toddlers to try to put things in the holes. In offices, sockets may be placed above desks (e.g. in dado rails) and one does not expect children to be running about.

On balance, I would include hotel rooms, schools and nurseries, but not offices.

gkenyon said:

The issue of 'household and similar use' actually covers usage not just in homes, but by 'ordinary persons' under conditions of external influence that may be found in 'household and similar' situations - such as offices, hotel rooms etc. etc.

I take the point, but then why does it not say so?

In households, typical sockets are just at the right height for curious toddlers to try to put things in the holes. In offices, sockets may be placed above desks (e.g. in dado rails) and one does not expect children to be running about.

On balance, I would include hotel rooms, schools and nurseries, but not offices.