Peaty, who has also helped Team GB to success in the pool with gold in the 100m breaststroke, tweeted: “Seeing this team progress over the last 6 years has been an honour.
“We always knew one day they would win the big one! Incredibly effort and no one deserves it more than these lads.”
Two-time freestyle gold medallist Becky Adlington appeared excited as she posted on Twitter: “HOW GOOD WAS THAT!!!!!”
“Insanely quick. What a swim,” Adlington tweeted, adding an acknowledgement of Calum Jarvis who swam earlier in the heats.
Team Bath, from the University of Bath, said they were “so, so proud to have three of this incredible quarter of Tokyo 2020 Olympics champions training with us”, noting the contributions of Tom, James and Matt, while also mentioning Team Bath-member Calum.
Andy Cyril Guy, brother of James, tweeted: “Can’t put into words James how proud we are of you, Olympic gold medalist, congratulations Duncan Deano, Matt & Callum .. what a team!!!”