The other week, when I was reading the news online — I do occasionally use the internet, in case you were wondering — I came across an advert from a major UK bank. It may be one of the largest in the world, but it certainly is not the most educated. 
The HSBC advert (for it was they!) said, roughly:
The criteria for our offer is X…
Not an exact quote, but the subject of the sentence was the word “criteria” and the verb was definitely “is”. And I decided, on the spot, that I could never, ever bank with HSBC.
Even the authors in the Libertà hive know better.
I mentioned it to dear Sophie on the telephone and I could hear her teeth grinding.
Quite right, too.
Sophie knew better. Why didn’t #hsbc ?