Thanks to both for the feedback
The people here who seem to be obstructive are an "advertising agency" so not sure that means they are the managing agents at all, (RP)
I believe it is the MA that the enforcers are attempting to track down, and just wondered how a similar issue may be treated down south.
I was thinking that if this advertisers are being obstructive, then possible they are in breech of Article 32(10)? there is a similar Section in Scotland.
I was also thinking that the enforcers can just initially bypass the advertisers and just head for the holiday lets/self catering apartments, and attempt to talk to whoever is residing there, ask who they pay rent to thats all, attempt to get details of the RP that way, If they say they are paying the advertiser, then might that be then that they are someone with a degree of control over the premises? and have a legal responsibility under fire law?
Then the enforcers could conduct as much as an audit that they could, and serve an EN and issue it to someone within the let to pass to the RP and additionally send a copy to the advertisers. The EN could give a period of time for the RP to conduct a FRA and provide an action plan for any remedial works. Scottish fire law allows for any official document to be served at the address in question, and where the full details of a dutyholder is not available to write on the document "to the person with Chapter 1 Duties"
Any failures to comply may mean the advertisers being brought to task??? in addition to or instead of the RP