The Mayor of London Boris Johnson has joined in the fun after it was revealed that Barack Obama mistakenly called the Chancellor "Jeffrey" at the G8 summit, claiming he had mistaken him for his favourite R&B singer, Jeffrey Osborne:
More top news
Sebastian DeLeon is only the fourth person to live out of the 138 people which have contracted it in the past 50 years.
The emoji was revealed ahead of the show's return tonight.
Hospitals in England are being forced to suspend acute services due to staff shortages. See if your hospital is affected here.