The team said: "McLaren Racing can confirm that Lando Norris was involved in an incident, after the Euro 2020 final match at Wembley, during which the watch he was wearing was taken.
"Thankfully, Lando was unharmed but he is understandably shaken. The team is supporting Lando and we are sure that racing fans will join us in wishing him all the best for the British Grand Prix this weekend.
"As this is now a police matter we cannot comment further."
Heading into his home British Grand Prix, Norris is an impressive fourth in the F1 drivers' championship having earned a third podium of the season last time out in Austria.
Norris has collected points at 14 consecutive races, the best run of his F1 career and the longest ongoing streak in the series.
Fernando Alonso, in 2007, was the last McLaren driver to enjoy such a stretch.