Hi,
You are using the v3.1 version of plugin, but your template still is in v2.x
it is not V3.1 yet. You should copy-paste the /com_virtuemart/ to your server.
Please make sure you delete this folder in your server
www.theclockshed.co.uk/templates/it_theshop/html/com_virtuemart/
(or simply change its name to com_virtuemart2)
And upload the com_virtuemart folder that comes out from the Template Installation ZIP file.
Then you will start seeing the effects of the plugin in the website.
By the way, the new version, v3.2 has been released, please download it. It includes some reported bugs fixings.
Flexible Forum Support.