The music licensing group PPL has called on the UK's major internet service providers (ISPs) to ban access to 25 'pirate websites'.
PPL is working on the behalf of the British Phonographic Industry (BPI), which is the UK's music industry trade association.
It wants to block access to the sites - which includes torrent-based services such as ExtraTorrent and MP3 download and streaming sites like Grooveshark - as it claims they are used to illegally download music files.
PPL has asked its members to inform them if they have licensed music to any of the listed sites. If not, they could seek a high court injunction that will order ISPs to prevent their customers from accessing the web pages, TorrentFreak reports.
"The growth of digital music in the UK is held back by a raft of illegal businesses commercially exploiting music without a licence from the copyright holders,” a PPL statement claimed.