Problem with leisure battery

I have a 2004 Peugeot boxer symbol, I have been away for a few days and even though I have had an electric hook up, the leisure battery has not charged. This has happened before and I bought a new leisure battery but the problem has remained. Does anyone have any ideas.

Hi Steve
Welcome to the forum from Bridington,you should get some advice soon from one of our members. 
Boaby

May be quite  an obvious suggestion but have you ensured the switch on your control panel is set to leisure and not vehicle?  

Also, have you checked that your charger  is switched on ?

There are two fuses near the engine battery, either simply hanging or fastened on the bulkhead . One is for the fridge and the other for the split charging system. These fuse holders corrode and blow the fuses. Get them replaced or cleaned up with new fuses.