[Stephen]

In regards to the tenancy, depending on the lease type and how long you have been there you may not get a new one. Your existing one should mention that.

As for the mould, if he is not fixing it then you could call the councils environmental health department to get them to look in to it. The may deem it a risk to health and you may have to move out? You can probably go to your local council or housing office in this situation and get put on the housing list with them due to being made homeless.

Sounds a bit extreme but I recently had a similar situation with a dodgy landlord.