How often does the Lambeth Conference take place? Eye knows that it is not every five years, which sneaked into print in David Zarembka’s latest article on 4 July.

A reader who works as a proof-reader pointed out the error, but used the website Wikipedia as her source. So to the rescue came Anne van Staveren, the Quakers' very own press officer, who drew to Eye's attention a page on the Anglican Communion’s website that states: 'The Lambeth Conference of bishops meets every ten years solely at the personal invitation of the Archbishop of Canterbury'.

So now we know.