It is the property owner’s responsibility to ensure any works carried out are legal, whether they are doing it themselves or instructing a pest control company. The contractor is not legally liable.
The average person requiring guidance on how to legally and humanely deal with pest birds such as pigeons and seagulls will soon discover that the subject is complex, with many conflicting views available. This overview covers the legal issues surrounding the lawful removal of pigeons and seagulls from your property.
Wildlife and Countryside Act 1981
The lethal control (killing) of pigeons, seagulls and other wild birds in the UK is legislated by the Department of Environment, Food and Rural Affairs (DEFRA), courtesy of the Wildlife and Countryside Act 1981 (Chapter 69), which effectively reports that it is illegal to kill or injure any wild bird, including pigeons and seagulls, unless general licensing regulations are complied with. All wild birds, their nests and eggs are protected by this law. Under this law, you must not intentionally kill, injure or disturb any wild birds. Also, this applies to when the bird is building a nest or the nest contains eggs or young, or disturb a nest containing chicks. You cannot remove or destroy the eggs of any wild bird.
Anybody that experiences a wild-bird-related problem should be aware that whether they deal with the problem themselves or instruct a contractor to provide controls on their behalf, the responsibility to ensure that those controls are legal lies with them and not the contractor. It is a common misconception that if a contractor provides controls on behalf of a third party, it is the contractor that is held legally liable should the law be compromised – this is not the case; it is the responsibility of the owner of the property upon whose site or building those controls are provided.