The spirit of David Bowie can defeat Isis, Boris Johnson has suggested as he paid tribute to the late singer in typical style in his final speech to the annual London Government dinner.
The Mayor of London, who is stepping down in May after eight years in charge of the capital, said no one was more deserving of being labelled a "genius" as Bowie, whose death on Sunday triggered an outpouring of tributes and grief.
He said Bowie's individualism and eccentricity was the kind of characteristic that drives modern London, adding: "It is hard to think of anything that would be more repugnant to the morons of Isil than the Bowie phenomenon."
On Friday Bowie's family released a statement saying they were "overwhelmed" by the "love and support shown throughout the world" to the late rocker.
Writing on Bowie's Facebook page, the family announced they are currently making arrangements for a private ceremony celebrating the "memory of their beloved husband, father and friend".
His body was secretly cremated in New York without any friends or his relatives present - a final wish of Bowie's. He reportedly wanted "to go without any fuss".
Paying tribute to Bowie during his speech to London Government leaders at Mansion House on Thursday, Mr Johnson said: "Think of that great Londoner who died this week amid an unexpected outpouring of global grief, a man who was born as Davy Jones from Brixton – and yet who reinvented himself as Ziggy Stardust and the Thin White Duke and other characters and who was recognised as a genius.
"It is hard to think of anything that would be more repugnant to the morons of Isil than the Bowie phenomenon.
"And yet it is that willingness to encourage individualism, and eccentricity, and experiment, that is one of the main drivers of the genius of modern London.
David Bowie: Life in pictures
David Bowie: Life in pictures
David Bowie in 1960s
Davy Jones; life before David Bowie
David Bowie in 1964
David Bowie 'In Mime' at the Middle Earth Club, London, 1968
David Bowie in 1969
David Bowie performing his final concert as Ziggy Stardust at the Hammersmith Odeon, London, 1973
David Bowie in 1973
David Bowie, with his wife Angela (Angie) and his son Zowie, after receiving an award for his latest record "Ziggy stardust" in Amsterdam, 1974
David Bowie in the 1970s
David Bowie's son, Duncan Jones, confirmed his death on Twitter
David Bowie in the 1980s
David Bowie gives a press conference presenting the Japanese movie 'Merry Christmas Mr. Lawrence' directed by Nagisa Oshima, during the 36th International Film Festival in Cannes, 1983
David Bowie performs on stage during a concert in La Courneuve, 1987
David Bowie during his concert in West Berlin, Federal Republic of Germany, 1987
David Bowie shakes hands with Princess Diana, 1993
David Bowie autographs copies of his newest album 'Outside' at the grand opening of a Herald Square music store 26 September 1995 in New York
David Bowie performs at the Panathinaikos stadium in Athens during a rock festival, 1996
David Bowie and his wife, supermodel Iman smile as they pose for photos after Bowie received a star on the world famous Walk of Fame 12 February in Hollywood, 1997
David Bowie getting ready to perform 'Earthling' at the Phoenix Music Festival in 1997
David Bowie on stage performing during the Tibet House Benefit Concert in New York City, 2001
David Bowie Meltdown concert at the Royal Festival Hall, London, June 2002
David Bowie performing during his concert at the Stravinski hall stage of the Montreux Jazz Festival, in Montreux, Switzerland, 2002
David Bowie in 'Last Call with Carson Daly' TV programme taping in New York, 2003
David Bowie walks with his with wife Iman and daughter Alexandria (2) in New York, 2003
David Bowie performs on stage on the third and final day of 'The Nokia Isle of Wight Festival 2004' at Seaclose Park, in Newport, UK
David Bowie poses with a pig, 2004
David Bowie and Kate Moss at the 2005 CFDA Awards dinner party at the New York Public Library in New York City, 2005
David Bowie and model Iman arrive to the Metropolitan Museum of Art Costume Institute Gala, Superheroes: Fashion and Fantasy, held at the Metropolitan Museum of Art in New York City, 2008
David Bowie anf Tilda Swinton at the MoMA's 6th Annual Film Benefit in New York, 2013
Flowers are left below a mural of David Bowie on the wall of a Morley's store in Brixton on 11 January 2016
"Where else would you find ginger-bearded hipsters selling Froot Loops for £3.80 per bowl? Where else but London would you find a restaurant where you are served in total darkness by blind waiters, the contention being that you will somehow taste your food better?
"Where else would you find a cocktail bar in a public toilet?"