At Learning Technologies in London they at the Adobe booth, you could get a discount for a future Certification course somewhere, but they were not yet dates nor locations.
This is a user forum, this is a question which can only be answered by the Captivate marketing team. I would not dare to give you an answer, just provided this information. BTW I am European, but not UK....
BTW name certificate has changed to '... professional' instead of 'specialist'. Still doesn't really cover the content, which is mainly aimed at newbies to have a basic idea of all the features of Captivate.