On 15 September 2017, at around 8:20 am BST (07:20 UTC), an explosion occurred on a District line train at Parsons Green tube station, in London, England. Twenty-nine people were injured and later treated in hospital. The main injuries were burn injuries. The incident is being treated by the Metropolitan Police as a terrorist attack. It was one of several attacks to occur on British soil in 2017 which are being treated as terrorism.

The bomber had placed the device in a white plastic bucket inside a shopping bag, according to images and videos posted on social media just after the attack. Wires were visible hanging out, as well as a black towel. Reports also indicate the device had a timer attached.

In a statement after the incident, Prime Minister Theresa May said: "My thoughts are with those injured at Parsons Green and the emergency services who, once again, are responding swiftly and bravely to a suspected terrorist incident."