Picture the scene. You are the owner of an isolated four bedroom bungalow in rural Co Galway and the recession is starting to bite.

Before you know it, you’ve found a tenant who always pays their rent on time and never bothers you with anything. So far, so perfect.

Or is it?

As tonight’s Ear to the Ground – to be shown on RTÉ One at 8.30pm - shows, John is one of an increasing number of people who have unknowingly had his rented property turned into a ‘grow house’