I've been keeping my eyes open for any prominent uk sites using any form of an opt in and havn't seen any yet.
It does however give a lot of info about their cookies and at the bottom of the page there is a link in red to remove their cookies from your computer.
Clicking the link takes you to a page where it says the cookies should be deleted when you next close your browser.
It then says:
The simplest method if you wish to prevent xx.com from setting any further cookies, is not to visit the site. In some browsers it is possible to use the browser settings to prevent cookies being set.
For more details visit www.allaboutcookies.org.
If you wish to continue using xx.com please click the button below. Please be aware that clicking this button will result in cookies being set (subject to browser settings) and that any further use of this site will be taken as accepting their use.
I am now hunting for a script to remove cookies that are already set - any recommendations.
I have also found a site that gave links for all the main browsers, linking to info on blocking cookies for a particular site.
Is there a definative list of locations to find this info for all browsers?