Arthur I'm not trying to trip anyone up and I'm sorry if you think so?

But, Lastlid has posted from the "horses mouth". CNI requirements January 2012 from the British Embassy.

See post #15 the highlighted bit, it states a CNI and CENOMAR are required.

Yes it seem things change and we can't rely on past experience....I would have thought the same as you, but I remembered a couple of members saying they needed both certificates.