Declan Rice danced and rapped while clutching the trophy at the club's afterparty at the Bacchanalia restaurant in Mayfair, central London, surrounded by a throng of staff.
Declan Sawyer had gone to Swanholme Lakes - a nature reserve near his home in Lincoln - as the local temperature soared to 27C. A huge search operation was mounted at the former quarry.
Fryer was among the family members of Arsenal stars invited onto the pitch following the trophy presentation as Mikel Arteta's players toasted their long-awaited Premier League triumph.