Hi Jo
I got both my building and contents insurance via Polaris World. I think they have their own insurance department that works directly with Zurich.
I am sure if you ring customer services they will send you all the forms. It was around 235 euro's for both, there is a different premium whether you declare it is going to be empty for more than 3 months.
I asked my broker about it and he suggested that I go with Zurich as he said if everybody went with Zurich insurance when it comes to claiming for anything Zurich wouldn't have anyone but themselves to argue with when paying the claim. (thats if it involves a third party).
Hope that helps