Political activism
In May 2016, Stormzy endorsed Labour Party leader Jeremy Corbyn. In an interview with the newspaper The Guardian, he spoke of his admiration for Corbyn's activism.
On 24 June 2017, Stormzy performed a chant of "Oh, Jeremy Corbyn" to the tune of The White Stripes' "Seven Nation Army" on the Other Stage at the Glastonbury Festival. He also performed a rap he had written for the victims of the Grenfell Tower fire, telling the festivalgoers to demand that the authorities "tell the... truth" and for the "Government to be held accountable". In September of that year, after being presented with the Solo Artist of the Year award by Corbyn at the GQ Men of the Year Awards, Stormzy called Prime Minister Theresa May a paigon, a Jamaican Patois word used to describe an untrustworthy person.
On 21 February 2018, Stormzy performed a freestyle at the Brit Awards, calling out May for her inaction in the aftermath of the Grenfell Tower fire the previous year. The following day, 10 Downing Street issued a statement defending the Prime Minister.
In November 2019, along with other musicians, Stormzy endorsed Corbyn in the 2019 UK general election with a call to end austerity. He also said "people-led change can be possible under a Jeremy Corbyn Labour government". He described the Labour leader as "the first man in a position of power who is committed to giving the power back to the people" and branded Boris Johnson "a sinister man". In the aftermath of the George Floyd protests, Stormzy issued a statement via his label, stating that he plans to donate £1 million a year for 10 years to charities, organisations and movements that are committed to fight racial inequality, justice reform and black empowerment in the United Kingdom. In an interview with the BBC, he said: "Black people have been playing on an uneven field for far too long and this pledge is a continuation in the fight to finally try and even it".
Stormzy has expressed support for the Palestinian cause. In October 2023, following the outbreak of the Gaza war, Stormzy posted a message on his Instagram account stating "Free Palestine". In the accompanying text, he wrote, "if there is ever a clear injustice in the world, no matter how big or small 100 times out of 100 I will be on the side of the oppressed. Unequivocally. As I always have been". He further demonstrated his support by performing at a benefit concert for causes in Palestine and Sudan in January 2024.
In February 2025, Stormzy faced significant backlash from supporters of Palestine for launching an advertising campaign with McDonald's. The fast-food chain had been the subject of a global boycott after its Israeli franchisee provided free meals to the Israeli military. Critics accused Stormzy of hypocrisy and compromising his beliefs, particularly after his earlier pro-Palestine Instagram post was no longer visible on his profile. In response, Stormzy denied that he had "compromised beliefs for commercial gain," stating that his stance on oppression and injustice had not changed and explaining that archiving the post was unrelated to the partnership.