For any Brit Dopers the follwong link is a hugely useful resource,
This used to be the Office of the Deputy Prime Minister and it has information on a very wide range of subjects including approved codes of practice for just about every health & safety issue - Its a better site to search than the Health & Safety Executive and it has more publications for downloads including research reports.
meanwhile…
The exit requirements for the building under UK fire codes depends upon the types of building and its useage.
http://www.communities.gov.uk/fire/firesafety/firesafetylaw/
If its a bed and breakfast with less than 6 people living on the first floor, then you would be ok with just a front door.
Once you start to get to multi-occupancy it changes dramatically.
I happen to have a lot of material on this very subject, but its no good to you as its in various publications in my own filing cabinets.
It depends on what sort of accommodation you are living in, if you can tell me the type, then I can find out more for you.
Here is a general code of practice
http://www.communities.gov.uk/documents/housing/pdf/142091
It’s quite long, but in it you will find some material relating to timely repairs and also what you should have with regard to fire safety.
http://www.communities.gov.uk/fire/firesafety/
There’s a huge amount of stuff here.
This might be more useful as it has downloads to the guides on fire safety for sleeping accommodation.
http://www.communities.gov.uk/fire/firesafety/firesafetylaw/