The egg would be a nice addition beardedbruce. And make the crumpets very rich. I would also use fresh yeast, and add a little sugar to get it fermenting nicely.

When I make scones I add an egg to the mixture once I've rubbed the fat into the flour. It makes them much tastier.

The old lady and her African husband have finished up all the drone-obtained stolen crumpets. They are contemplating a night-time raid on the Tavern, as they've heard a new batch (from a delicious recipe) is in the making.
They're preparing their disguise. Should it be Batman and Robin? Or Yogi Bear and BooBoo? Mr and Mrs Blobby? Perhaps Popeye and Olive Oyl?...the discussion continues.