Alastair Campbell opened Good Morning Britain with a rendition of Three Lions on the bagpipes.
Mr Campbell, who was Downing Street’s director of communications when Tony Blair was prime minister, returned to the ITV show as a guest presenter after making his debut in May.
Standing in front of screens showing waving England flags, the former journalist, who has Scottish parents, played the woodwind instrument to the studio team and viewers at home.
Before appearing on the show, he posted on Twitter: “Moment of truth shortly upon us … being asked … does a Scottish fan (aka moi) support England tonight?
“Any Italians and any @Baddiel people please tune in just before 7 @gmb … certain tunes as you have never heard them before.”
It came as England fans prepare for their team’s Euro 2020 semi-final clash against Denmark at Wembley.
Mr Campbell has said he plays the bagpipes to relieve stress.
During the pandemic, he recorded a charity song written by Martin Gillespie of Scottish band Skerryvor, titled Everyday Heroes, which topped the iTunes download charts and raised money for NHS charities.