English Nature has repeated its warning to businesses that own land containing protected species about upholding their legal obligations.

Following the prosecution of a North Yorkshire company for damaging moorland, the Government's wildlife advisor is concerned that many landowners are still flouting the law.

According to English Nature, wildlife crime on legally protected Sites of Special Scientific Interest (SSSIs) increased by 100 per cent during the past year.

Alison Flowers, English Nature enforcement officer, said: "People who damage SSSIs are not only committing criminal offences, but are threatening the future of our wildlife and geology and stopping others from enjoying it."

Of the offences committed last year, 29 per cent were by people who owned or managed SSSIs, but carried out unauthorised activities, such as overgrazing and dumping. Illegal off-road driving was another concern.

Moorland and coastal SSSIs suffered most damage, with bird disturbance a common problem.

Ms Flowers said: "English Nature considers itself a firm, but fair regulator in relation to its enforcement role. This belief is reinforced when we consider that more than 80 per cent of the enforcement action that we have taken during this period has been through the use of enforcement warning letters.

"However, where there has been significant damage to sites or continued non-compliance with the legislation, we will consider taking robust action, such as formal investigations, cautions and prosecutions."

Published: 21/06/2005