Mine went up this year from £150 to £170, Other vehicles no change, so the Zed has gone up nearly 15%. Apart from getting older, nothing changed. 
To the OP don't forget to try this:- 
http://www.moneysavi...picker/#sectors 
  
And of course you have to take into account this:- 
http://www.motorcari...ode-ratings.php 
A=Good, F=Bad..... and Refer means you're unlikely to get a quote.