We assume that the loft room is at second floor level and you have record information of the conversion works, whilst this type of work may not require planning it should have been submitted for Building Regulation approval.
Whilst you note the structure (Part A) there are many sections that require consideration.
Means of escape is one aspect and the fire regulations where amended in 2007. If you apply now for retrospective approval you will have to comply with all current requirements, which can include thermal and ventilation.
In answer to your question the new fire regulations (Part B) are now very clear about protection of escape routes and smoke detection that has to be linked into the mains and have a back-up power source.
All doors onto a protected route have to be of the required fire rating and smoke detection will be required in living room, circulation areas as well as in the kitchen.
You can make a retrospective application, but you may be refused and have to put right all the required elements to satisfy Building Regulations. There is no easy answer, but it may be worthwhile speaking to your BCO and see what they require. Please feel free to contact us should you require any further assistance.
Regards,
Jeremy Wedge MIstrutE CEng On Behalf of Loft Conversion UK
