This document may be of help.quote below appears to extend the powers of the housing officer to the common areas of flats.
http://www.communities.gov.uk/documents/housing/pdf/safetyratingsystem.pdfConsultation with fire and rescue authorities
6.12 The Regulatory Reform (Fire Safety) Order 2005 (SI 2005 No. 1541) will rationalise
existing fire safety legislation, including the Fire Precautions Act 1971, and bring it into
one regime. Guidance will be issued under the Order.
6.13 Section 10 of the Act requires local housing authorities to consult the local fire and
rescue authority before taking enforcement action in respect of a prescribed fire hazard
in an HMO or in the common parts of a building containing flats. The form of the
consultation is not prescribed. Where emergency measures are to be taken in relation to
a prescribed fire hazard the housing authority must consult the fire and rescue authority
before taking those measures as far as is practicable.