The remarks come after more than 100 XR protesters on Friday blocked roads outside three printworks in England and Scotland, used by The Times, The Sun, The Telegraph, and the Daily Mail, all conservative-leaning titles with a combined daily circulation of about 3 million copies.
Police said they had arrested 42 people by Saturday morning at the Broxbourne plant and a further 30 people were arrested in Knowsley.
Nearly four years after its creation The New European goes from strength to strength across print and online, offering a pro-European perspective on Brexit and reporting on the political response to the coronavirus outbreak, climate change and worldwide politics.
Newsprinters said: "Thanks to other industry partners, printing was transferred to other sites".
"We apologise sincerely to any readers of The Sun, The Times, the Daily Mail, the Daily Telegraph and the Financial Times who may be unable to buy their usual newspaper this morning due to late deliveries", the spokeswoman said.More news: Five observations from the Clippers' Game 1 win over the Nuggets
Boris Johnson has condemned the blockade of newspaper printing plants by climate change protesters as "completely unacceptable".
"A free press is vital in holding the government and other powerful institutions to account on issues critical for the future of our country, including the fight against climate change", he said on Twitter.
His fiance Carrie Symonds, a former head of communications for the ruling Conservative party before becoming an environmental campaigner, also waded into the controversy.
Priti Patel reacted angrily to the protests, slamming XR's blockade of the printworks as "an attack on our free press, society, and democracy".
Chief Superintendent Matt Nicholls of Hertfordshire Constabulary said: "People have a right to peaceful protest, however this was a carefully orchestrated blockade of a public road, created to cause the maximum possible harm to local businesses. Overnight print workers, delivery drivers, wholesale workers and retail newsagents have faced delays and financial penalty", the spokeswoman was quoted by the Reuters news agency as saying.More news: Deshaun Watson signing monster extension with Houston
Dee Patel, 41, who runs a small convenience store in Sevenoaks, southeast of London, said around 120 newspapers had failed to arrive, costing him hundreds of pounds in refunds for the papers and delivery fees. "They're upset", he told AFP. I will be requesting details of the attendees at previous meetings since I am aware that one of Extinction Rebellion's organisers, Roger Hallam, is based in Wales and is on the record as calling for business people and governments to have 'a bullet in the head.' Hallam did not meet Paul Davies MS.
XR said on Twitter it was sorry for disruption caused to newspaper retailers but was unrepentant about its targeting of the media conglomerates.
Eighty people were arrested as police cleared the sites on Saturday.
Extinction Rebellion have 10 days of action planned, demanding the government declare a climate emergency.
Last year, more than 1,700 people were arrested during its 10-day "Autumn Uprising" that led to major disruption across the UK.More news: Authentic wins 146th running of the Kentucky Derby