"Following the fantastic win by England, officers were out across London patrolling and engaging with people. There were large pockets of groups who gathered predominantly in central London, and officers remained with them", the police tweeted.
English fans took to the streets of London late Wednesday after the national team beat Denmark at Wembley Stadium and reached the final of a major tournament for the first time in more than half a century.
England will face Italy in the final of the European Championship on Sunday at London's iconic stadium Wembley.