SwingsitlikeHogan
Major Champion
On inquiring it seems that in additional to across the board increases, our premium was increased due to building work we have ongoing.if you want to calculate it
www.abi.org.uk/products-and-issues/choosing-the-right-insurance/home-insurance/buildings-insurance/calculating-your-rebuild-cost/
A lot of insurers now just go by the number of bedrooms and build i.e detached semi or terrace etc.