Yes thanks I agree with most of your replies. My gut feeling is that these do not feel like common areas but I think that the landlord, having put a condition in the tenancy agreement of both of his tenants is then really duty bound under the Order to ensure that the condition is being complied with and to take action if one is not? In most such cases I guess only the Landlord has the right of access to both sides of the door to ensure compliance and one tenant has no idea what is going on on the other side.
Now whose job is it to install test and maintain the emergency escape lighting and signage?
I think you need to be careful with that Kurnal. To try and ratify the problem you firstly need to look at who has to any degree control over those premises.
There are definately no communal areas in the scenario you give. Therefore each individual area is under the full control of each individual tenant.
Both tenants have the ability to keep the pass door open and available under their control. They don't need the landlord to do that.
OK one tenant could block the pass door causing a problem for the other tenant. The agrieved tenant may then contact the landlord and complain but dependant on the terms of the lease agreement the landlord may say " Not my problem - sort it out between yourselves?"
If that is the case the agreaved tenant may be stuck and may therefore need to implement interim measures (ie restrict the use of the basement for his or her staff) Again it comes back to control.
The tenants have sufficient control to implement interim measures if required, the tenants have sufficient control over the pass door. I deem them both to be RPs in this example, not the landlord.
In terms of signage and lighting, each tenant would be responsible for it in their respective parts of the basement.