I think the bedroom doors in all protected corridoors should have some form of self closing device, in a new build, under the current ,and new, approved document B.
However,In my local area, a document was produced ( sometime in the mid 90's)in consortium with all the county building control authorities, social services and Fire and rescue service in relation to the 1984 draft (Green) guide to fire precautions in existing residential care homes, and within this document it was aceptable to have 'protected areas' of max 12 beds, that if satisfied certain criteria, could ommit the self closers on the doors.may be the architect was thinking of this standard.But not to my knowledge in a new build-has this been missed by the BCO and the FSO inspecting on behalf of CSCI?-or have I got it wrong :-(