I know the difference between an American muffin and an 'English' muffin! English ones don't have bananas in them and all that crap. The 'English' muffin is nothing like a true crumpet or, more properly, 'pikelet'. As detailed above, a crumpet/pikelet has holes in top and is toasted in one piece.

This may help - http://www.guardian.co.uk/lifeandstyle/2009/nov/14/crumpets-muffins-pikelets-farls