Herring Gull
It suggests going to the RSPB website for some updated advise aswell as offering Defra and natural England.
I sent the link for advice to the RSPB website about Gulls and laws on the other forum which goes through everything with legislation so I hope that comes in handy.
There is also another Link that might be helpful too.
So I thought il post it here
https://www.rspb.org.uk/birds-and-wildlife/advice/gardening-for-wildlife/animal-deterrents/gulls/