From 1999 until 2003, the UK’s Channel 4 screened an Emmy award-winning female-led comedy series called Smack the Pony. In one sketch a woman called Jackie O’Farrell (played by Doon Mackichan) marches into an adult education centre somewhere in England, sits down and tries to register for a course in speaking English as a foreign language.

But you already speak English, the puzzled course organiser (played by Sally Phillips) says. “I only speak English English,” Jackie replies. “I don’t know how to speak it as a foreign language.” She travels a lot, she says. “Foreign people can’t understand a word I’m saying.”

Hilarious, except that Jackie was ahead of her time. It is now widely recognised that many people don’t understand what native English speakers are saying. Widely recognised by non-native English speakers that is. The Brits, Americans, Australians and others who have been speaking English all their lives are largely oblivious to the incomprehension they leave behind at conferences, business meetings and on conference calls.