And those cookies are essential so you are covered!
I have been going through all of my sites to make them EU/UK Cookie Compliant. To do this I have been using the Attacat Cookie Audit Tool, a Google Chrome Add-on to complete a cookie audit and to help create a cookie information page.
Then I have been using Cookie Consent to allow people to choose which cookies to accept.
I have found that the main issues on my sites have been the Social Networking buttons created using Webassist and also any Analytics that I have in place (Google, Piwik etc).