This picture always makes John Edwards smile. It will also make any old Royal Navy regulators shudder.
Look closely at the woman immediately behind King George VI’s left shoulder and spot the difference.
You can imagine the scene. It’s 1941 at HMS Daedalus and everybody would have been up all night preparing for the parade and inspection by the monarch.
And then one Wren – John’s sister Margaret Cave, who worked in one of the offices at Daedalus – puts her respirator over the wrong shoulder and nobody notices.
John, who also served in the navy says: ‘Our dad always said: “That’s our Margaret, the only one to get it right...”.’