Theresa May isn't the only world leader to have fallen victim to Nelson's pranks - Donald Trump encountered the comedian back in June 2016 at the re-opening of his golf resort in Scotland, handing out golf balls emblazoned with swastikas to the crowd as the then-presidential candidate took the podium for a speech.
The former Spice Girls star is currently going through a messy divorce with husband Stephen Belafonte.
• Leona Lewis' biggest moments: from X factor auditionee to superstar - in pictures “I did not suffer from depression,” she says firmly.
So much went wrong but that's what makes live TV so cray (crazy)!
" Mel and Stephen, the father of her five-year-old daughter Madison, are set to face off with each other at a trial on 25 September in which they will argue over her request for a permanent restraining order.
It’s not that she has recovered from her depression, but more a case that she now denies she was ever depressed – at least technically – in the first place.
Lewis describes herself as having “highs and lows” brought on by circumstance, not a clinical illness.