A teenage asylum seeker accused of planting a bomb at Parsons Green Tube station had been referred to the anti-terror Prevent programme by a college lecturer, a court heard.

Iraqi Ahmed Hassan, 18, arrived in Britain in October 2015, two years before he left 400g of TATP on a Tube train, which partially exploded, the Old Bailey has heard.

During that time, he studied media at Brooklands College in Weybridge, Surrey, and was found a foster home with a couple in Sunbury, the court heard.

Even though Hassan had been named student of the year in June 2017, his lecturer and mentor Katie Cable became concerned about his behaviour, the court heard.

Ms Cable even alerted the Prevent team after she saw a WhatsApp message on his phone saying: "IS has accepted your donation" in August 2016. The Prevent programme aims to stop people being drawn into terrorism.