The RR(FS)O and the guidence notes on assembly buildings are quite clear. The owners of the building should have a 'Responsible Person' who oversees the fire safety in the building, ensures that the extinguishers, fire exits, any alarm system (if their FRA shows one is needed) and any emergency lighting provided is kept in good order. The hirers, such as the pre-school group or even casual ones for a party, are legally responsible for their safety and that of their staff and visitors while they occupy the building, and need to be told in their contract of hire what fire precautions have been taken and their legal responsibility.
Regular hirers should appoint their own 'RP' to liaise with the owner's 'RP' and to arrange their own FRA in the the light of how they use the building.
Casual hirers could be be given a quick run through* the provided equipment, escape routes and what to do in case of fire by the person who lets them into the building.
Ofsted will require the pre-school group to ask for annual letters or copies of certificates from the owners regarding extinguisher and alarm system maintenance being carried out.
Regarding extinguishers, I have the following views:
NO dry powder - there are few risks in a village hall which warrent one. And the clearing-up afterwards is dreadful. The Ecclesiastical Insurance Office have asked all churches and church halls they insure to withdraw DP extinguishers following vandalism in a church where one DP was discharged, because they are having to pay out around £0.25M just to clean up the church interior (and the organ) to prevent long-term damage to stonework etc.
Kitchens: NO extinguisher in the kitchen other than a fire blanket. I've seen and heard of a number of examples where people have enthusiastically charged in with a CO2, stood too close to the fire and blasted burning fat or the like all over the place. Most hall kitchens are relatively small. Also ban deep-fat frying and insist on oven-bake chips etc - far safer!
*At my own church, for the casual hirers of the hall, we have an A5 sized check-list printed on one side which lists the following points:
Keep external entrance clear in case of emergency
Fire Alarm is in operating order
The passageway to be kept clear
The emergency lighting is in operating order and exit signs to be left on.
Hall fire exit to be kept clear.
No deep-fat frying in kitchen and location of fire blanket.
The hirer and whoever lets them in (usually me) both sign the bottom of the list to acknowledge they been told what to do.
On the reverse in clear large bold lettering is 'What to do in case of Fire', the address to give the emergency services, and further contact details for contacting the Vicar and other church officers. This card is left on display in the kitchen, and collected and filed away when the hirer departs.
Hope this is of help.