A total of 34 people were reported for the consideration of a fixed penalty notice under the Health Protection Regulations.
The organiser was reported for a £10,000 fine.
Watch: Drone footage shows police shut down illegal house party in Nottinghamshire
Superintendent Daniel Rutland, said: "As we prepare for more restrictions to be eased in England it is more important than ever that everybody is following the rules and avoiding unnecessary risks.
"We all have a part to play to ensure the Covid infection rate does not rise again and this type of behaviour risks jeopardising the progress that has been made by the majority of people who have followed the rules."
Lockdown restrictions are to ease from Monday, as non-essential shops, gyms, libraries, spas and community centres will open across the country.
Watch: How England will leave lockdown