Supporters of the BNP, the English Defence League and Combat 18 were among the recipients of Anders Breivik's 1,500-page manifesto which he emailed to contacts 90 minutes before he began his murderous spree.
The Daily Telegraph has learned at least 250 British-based contacts were sent Breivik's manifesto, in which he explains his extensive links to far-right groups in the UK, less than two hours before he killed 76 people in Norway's worst terrorist atrocity.
Already it has emerged that Breivik had made online contact with members of the English Defence League (EDL), chatting to members on Facebook and posting on the group's official website under an assumed name.
Now the Daily Telegraph has obtained a list of 1,003 email addresses which Breivik sent his manifesto to. The document was sent at 2.08pm Norwegian time on Friday, shortly before the bomb in Oslo was detonated at about 3.30pm.
While many of the addresses do not give away the identity of the recipient, some hint at membership or support of far-Right groups in the UK.
Three addresses include reference to the British National Party, while one is addressed to Combat 18, the neo-Nazi organisation. Individuals linked to the EDL are also included.
Daryl Hobson, the EDL supporter who claimed on Facebook that Breivik had attended an EDL demonstration in the UK in 2010, is on the list.
The document is also emailed to a C Donnellan. Clive Donnellan is an EDL supporter who has also spoken of his support for the BNP.
Many of the addresses contain clear right-wing references. Some include the number 88. Column 88 was a UK-based neo-nazi organisation.
The manifesto is also sent to a group calling itself the East Midlands National Alliance.
The list has been forwarded to the police by Tanguys Veys, a Belgian MP for the far-right, anti-Muslim Vlaams-Belang party. Mr Veys is on the list of recipients as are a numbers of his party activists.
Yesterday he said he was surprised to be on the list, adding: "I was connected with a terrorist act and I didn't want to be connected with a terrorist act."
Scotland Yard is believed to have been handed a copy of the list. It is thought that the force will examine whether any of the recipients had links with Breivik.
There is no suggestion that any of the British-based recipients knew Breivik or had any contact with him prior to receiving his manifesto unsolicited.
But in the document he claimed to have 600 EDL supporters as friends on Facebook.
Recently it emerged that he had posted on the group's official website earlier this year where he was told he would be welcome to attend a demonstration in Britain.
One EDL supporter said that Breivik, 32, had attended a demo in support of far-right Dutch politician Geert Wilders in London in March 2010. Breivik's solicitor confirmed that he had visited London in the past.
Stephen Lennon, the EDL leader, said the group had no association with Breivik.