These only appear on Google Maps on my Android smartphone. They do not show on Google Maps on my Windows 11 devices.
I have never visited the locations. They seem random. They do not appear on my wife's Android smartphone.
How do I get rid of them?
I fixed it. I must have unknowingly 'Explored' 'Odeon Cinemas' at some point. See bottom of photo where it shows 'Odeon' and a Pin icon. I tapped on the Pin icon and this cleared the map of ticks and crosses so they were all related to Odeon cinemas in the UK.