It’s a sunny morning in London on the feast of Corpus Christi and, not coincidentally, I’m standing outside the presbytery of Corpus Christi Church waiting for someone to answer the door. Somewhat to my surprise, it is opened by the man I’ve come to interview: Cardinal Francis Arinze, who is in town to celebrate Mass. The former head of the Church’s liturgy department is marking the great feast of the Eucharist at a church named after it.

Cardinal Arinze regards me with the slight wariness of an ex-Vatican official meeting a journalist. But he’s in a good mood. He loves Britain, he says: “Whenever there is a good reason to come here – or excuse – I’m happy about it.”