A 14-year-old schoolboy who was knifed to death on a Londonbus in Woolwich is believed to have been an online rapper known as 'Grippa'.

The teen was stabbed in front of horrified passengers of the 472 bus towards Abbey Wood in what police called a "horrendous crime". Emergency services raced to the street in Woolwich just before 2:30pm on Tuesday, where a number of police cars and ambulances surrounded the red double-decker bus.