A man shouting and holding knives has been tasered by police outside Buckingham Palace.
The drama unfolded as hundreds of tourists and Londoners gathered to watch the changing of the guard.
A warning - Nick Thatcher's report contains footage that some viewers may find upsetting.
More top news
The killer's solicitor has written to police challenging them to prove his confession.
Tottenham last won the league back in 1961 - but they are feeling confident after a string of great performances this year so far.
Crimestoppers are offering the reward as police say they are becoming increasingly concerned at the viciousness of the assaults.