If you work for the Church of England in any capacity, from Archbishop of Canterbury to parish flower-arranger, how do you deal with the distressing statistics that in the past 20 years, average Sunday attendance has plummeted to 780,000 and is going down by a rate of about 20,000 a year?

Do you pretend it’s not happening and just tell everyone about the spike in your numbers at Christmas, or accept that it might be happening but believe that God’s grace will deal with the problem in its own good time? Or do you throw your weight behind a vast national...