Alright. Fingers on buzzers. Last front-bench politician to convert to Catholicism?

Ann Widdecombe, correct, who changed denomination from the Church of England following the decision to ordain female priests. Good old forward-thinking Widders.

Interestingly, if you answered Alan Clark I'd have marked you wrong on two counts. For one, I'm not sure I'd call him a front-bench politician, since he never held high office. And two, his widow denies the reports that he converted to Catholicism shortly before his death. So it's Widdecombe or bust. Or Widdecombe's bust. I'll allow you a quiet shudder there.

So who else, then, has done a Reverse Henry? Thrown away the faith into which they were born in order that they might join the Alma Mater of Christianity - perhaps while serving as a peace envoy in a hotbed of religious zeal?

Looking down the list I find Buffalo Bill and Eric Gill to be a happy rhyming couplet of Catholic conversion. Bill, whose achievements primarily involved bison; and Gill, who not only sculpted Prospero and Ariel for the BBC, but invented its current font of choice - Gill Sans. Both found sanctuary in the Pope's bosom (not Widdecombe's). Gill converted early on in life, and we shan't mention the child abuse in any detail as it's an open goal as far as this conversation is concerned. Bill took the oath on his deathbed. They all count.

Bob Hope makes the list, having lived like Blair with a family composed in its entirety of Catholics, and John Wayne's last act was to follow suit for the same reason. The Jewish Siegfried Sassoon bit the bullet during his life as well, as did Evelyn Waugh (in 1930). And the man who once upon a time occupied my first room at university, JRR Tolkien, moved with his mother from Baptism to Catholicism at the age of eight. (It's not name-dropping if the name in question had been dead for more than 30 years when the incident to which you refer took place.)

But perhaps the finest name of them all on the list is that of Delia Smith. Yes, your favourite gastronomic goddess is a culinary Catholic. She was baptised into the Church of England but became a Catholic at the age of 22, writing the book "A Journey Into God" in the process - rather God than me.

Inspect the list for yourself on Wikipedia here. I have double checked all the entrants above but be careful with some of the others, it being Wikipedia and all that.