I own a 23' x 10' static caravan with only one exit door. I have been told that this is unsufficient for present day standards and should have two exit doors. Is this true or does it depend on the age of the caravan?

As far as I am aware there is no legislation covering the construction of mobile homes only caravan sites. However there are two standards the UK one BS 3632:2005 and the European standard BS EN 1647:20121 and they both require adequate means of escape which can be doors, escape windows or knock out panels. It appears that you have a choice and also British standards are not legislation they are only recommendations but you need to study the standards to get the full understanding. The local reference library may be useful.

What is most important is treating fire safety with a high priority check out Caravan Safety - Leaflet (new window PDF 225 kb)