After the ‘rule of six’ law came into force on Monday, home secretary Priti Patel said she would call the police on her neighbours if they were breaking the rules.
The law, which bans any social gathering of more than six people, was quickly imposed in an effort to stop the spread of coronavirus.
People face fines of up to £3,200 if they do not abide by the new measure, which was announced by Boris Johnson last week.
When questioned on what she would do if she saw her neighbours breaking the new rule, Patel told Sky News: "I'm rarely at home but if I saw something that I thought was inappropriate then, quite frankly, I would call the police.”
She added: "It's not dobbing in neighbours, it's all about us taking personal responsibility."
The home secretary insisted that it was a "personal choice" for people to report their neighbours if they were inclined to do so.
Watch: Coronavirus: 'Rule of six' explained