In message , Tim+
writes

But all species of seagull are protected; it's illegal to kill them.
http://tinyurl.com/q68wz52


Interesting that there is provision to kill them in certain circumstances,
including the protection of other wild birds.

"The UK administrations can issue licences, permitting nests to be
destroyed or even birds to be killed if there is no non-lethal solution,
and if it is done to prevent serious damage to agriculture, the spread of
disease, to preserve public health and safety and air safety, or to
conserve other wild birds."

Those licences can be hard to come by:-(

The applicant is expected to have exhausted alternative non-lethal means
before inviting the local pigeon shooters along. e.g.

Where we holiday, the hotel employs a visiting hawker (tame Harris hawk)
to deter the Pigeons.

--
Tim Lamb