jonny is not known for being truthful.I just don't believe you. Churches do have overflows but I don't believe there was over a thousand people at your church or a big screen, not least because I really don't trust you to be able to count over 12 without taking off your socks.
But my main point was that the royal family hasn't done Easter announcements often and it's a minor celebration observed by only a tiny proportion of Christians in the UK, let alone people in the UK, especially compared to Ramadan.
