O2 and Be Broadband have started sending out warning letters to subscribers suspected of online copyright infringement, it has been reported.
According to ISPreview.co.uk, the sibling broadband providers have distributed correspondence of this nature to around 2,800 customers.
The move comes as Golden Eye International, a firm which holds the copyright to various online productions, aims to combat illegal downloading of its content.
The company originally hoped to target around 9,000 O2 and Be Broadband account holders and seek compensation from those thought to have illegally accessed its content.
However, the High Court forced Golden Eye International to tone down its letters.
The Digital Economy Act 2010 was designed to combat online copyright infringement, by requiring internet service providers to warn customers who participate in illegal filesharing.
However, some of the provisions of the controversial act are yet to come into force.