The London park topped a study by idealo, which looked at over 50 parks across the country.
Key metrics included park ratings, monthly searches, and the number of Instagram and TikTok posts.
Richmond Park, known for its open spaces, ancient woodlands, and deer herds, received an average rating of 4.7 out of 5.
The park also featured in more than 503,000 Instagram posts and nearly 10,000 TikToks.
Following Richmond Park was Hyde Park, another well-loved London park, which scored an average of 4.6 out of 5.
As the most searched-for park in the UK, Hyde Park sees 450,000 monthly Google searches.
The park, a favourite on social media, is featured in over 104,000 Instagram posts and 12,000 TikToks.
Greenwich Park was ranked third, with visitors rating it 4.6 out of 5.
The park is appreciated for its picturesque picnic spots, views over London’s skyline, historic landmarks like the Royal Observatory, and well-kept gardens.
Online, it has been featured in 250,000 Instagram posts and nearly 7,000 TikToks.
Other parks in the top ten include Sefton Park in Liverpool, Hampstead Heath in London, Heaton Park in Manchester, Victoria Park in Bath, Roundhay Park in Leeds, Sutton Park in Birmingham, and Weston Park in Sheffield.
These parks have been recognised for their unique offerings and popularity both on the ground and online.
With the promise of warm weather, thousands are expected to flock to these popular parks for picnics this summer.
As such, park-goers are advised to familiarise themselves with local park rules to avoid potential fines.
Common activities such as playing loud music could lead to fines of up to £300 in some areas.
The study also revealed that Reading is the best city in the UK for a picnic, earning a score of 8.21 out of 10.
The full study, which provides further insights into the UK’s favourite parks and picnic spots, can be viewed on idealo’s website.
With the summer months ahead, these parks are set to remain bustling hubs of activity, offering a mix of natural beauty, history, and community spirit for all to enjoy in the heart of the city.