Remember that the risk assessment must also consider the risk to others, including firefighters.
Whilst I agree with most of what you say jay jay we shouldnt overlook article 2
"relevant persons" means—
(a) any person (including the responsible person) who is or may be lawfully on the premises; and
(b) any person in the immediate vicinity of the premises who is at risk from a fire on the premises,
but does not include a fire-fighter who is carrying out his duties in relation to a function of a fire and rescue authority under section 7, 8 or 9 of the Fire and Rescue Services Act 2004 (fire-fighting, road traffic accidents and other emergencies), other than in relation to a function under section 7(2)(d), 8(2)(d) or 9(3)(d) of that Act;
In the past I have also found that work on pipes and ducts without replacing the fire stopping between floors has breached the compartmentation and caused unexpected spread of smoke in blocks of flats