Many pubs living accomodation can only be accessed from the bar areas so even if its the owner living up there I think we all have a duty to point out how it will affect them and their families not just their staff. Yes the RRO protects the staff but those owners lives are worth something.
The owner and his/her family are relevant persons and their means of escape must be considered. Yes the private quarters are probably domestic and the order does not apply....but if the owner could be affected by a fire on the pub premises.....they are relevant persons.