John Beynon blogged an entry about Goss Interactive, a U.K. company who has created a CMS named iCM. The cool part of the post was a link to the iCM client list which includes 30 local government authorities, health agencies, utilities, educational institutions, and more. That's a lot of ColdFusion in use in the U.K.!
Surely from your trips to the CFUG in London you are aware of this?
http://theservicefactory.blogspot.com
...or can you not answer that question? :)