Corbyn ran a weather monitoring company called WeatherAction in the 1990s and gained some prominence in the media for his predictions and, later more so, for his rejection of the scientific consensus on climate change.

Corbyn was arrested on several occasions for taking part in protests against public health laws, and on suspicion of encouraging people to burn down the offices of members of Parliament.

[1][3] He grew up at Yew Tree Manor in Pave Lane, in Newport, Shropshire, a 17th-century country house which was once part of the Duke of Sutherland's Lilleshall estate.

[8] While he was an undergraduate, an article by Corbyn was published in the Royal Meteorological Society's magazine Weather discussing a brine barometer and an electrical thermometer.

Although this particular council did not survive, increased student representation on college boards and committees became a lasting success of Corbyn's time as ICU president.

[12] He and some of the squatters in Elgin Avenue were, as a result of their campaign which included the building of barricades against eviction, rehoused by the GLC in 1975 spread out between Westminster and other London boroughs to discourage the risk of further united action.

In August 2015, Corbyn supported his brother's campaign in the Labour Party leadership election, on the basis that he stood for proper debate and accountability, including on climate.

[25] Corbyn reacquired the weather prediction business; the listed shell was taken over by investors and changed its name to 'InternetAction.com', with the intent of researching potential net-based takeover targets.

Indeed the balance of evidence indicates that the system performs better than chance although it is recognized that the margin of success differs greatly between the seasons and is lowest in winter when gales are most frequent.

This is not, however, the arena in which such issues should be taken up.In a 1999 edition of Wired magazine, researchers Ian Jolliffe and Nils Jolliffe stated of Corbyn's predictions that:[29] "It is unusual for most of the detail to be completely correct, but equally it is rare for nearly everything to be wrong… Some forecasts are clearly very good, and a few are very poor, but the majority fall in the grey area in between, where an optimistic assessor would find merit, but a critical assessor would find fault."

In 2020, Corbyn was reported by Hope not Hate and the Community Security Trust to have attended a meeting organised by Keep Talking, a conspiracy theory discussion group based in the United Kingdom which invites guest speakers involved in Holocaust denial.

[48] In 2015, BBC Radio 4 apologised for an "unfortunate lapse" in a documentary presented by Daily Mail journalist Quentin Letts, which featured Corbyn in a critique of the Met Office's views on climate change while failing to mention the scientific consensus.

[50] He was interviewed by Dutch filmmaker Marijn Poels for his 2017 documentary feature film about climate, energy and agriculture, called The Uncertainty Has Settled.

[51][52][53] In April 2019, Corbyn tweeted about the Swedish environmental activist Greta Thunberg with an image of her next to a Nazi swastika, describing her as an "ignorant, brainwashed child".

[54] In April 2023 Corbyn was removed from an Extinction Rebellion church service in London afer gatecrashing the event and telling environmental activists that man-made climate change "does not exist" and that they were "working for the Devil".

[57][58][59] He called the pandemic a "psychological operation to close down the economy in the interests of mega-corporations" on Good Morning Britain; Dr. Hilary Jones described his views as spurious and "extremely dangerous" and hosts Piers Morgan and Susanna Reid challenged him during the programme.

[60] On 16 May 2020, Corbyn was one of 19 people arrested for refusing to leave and failing to provide details whilst protesting against the UK's COVID-19 lockdown in Hyde Park, London.

[64] On 29 August, Corbyn was arrested by the Metropolitan Police near Trafalgar Square and warned he would be issued with a fixed penalty notice (FPN) for £10,000, on suspicion of breaking new Health Protection Regulations (2020) for the offence of holding a gathering of more than 30 people in an outdoor place.

[86] Corbyn initiated and conceptualised an anti-vaccination leaflet which was distributed in Barnet and other areas of North London in December 2020 and Southwark in January 2021 comparing the Covid vaccine campaign to the Holocaust.

[87][88] The leaflet had a drawing of the entrance to the Auschwitz concentration camp in which the Nazis' slogan Arbeit macht frei ("Work sets you free") had been altered to read "Vaccines are safe path to freedom.

"[88] Corbyn denied the accusation of antisemitism, saying, "I was married for 22 years to a Jewess and obviously her mother's forebears fled the Baltic states just before the war because of Hitler or the Nazis in general.

[89] During a voluntary visit to a London police station, Corbyn was arrested on 3 February 2021 on suspicion of malicious communications and public nuisance in connection with the leaflet;[90] he was released on bail until early March, along with a man aged 37.

[94] In June, the police began investigating Corbyn after they became aware of a video that surfaced online of him removing public health signs informing people to maintain social distance and to wear a face mask on a London Underground train.

The protest was condemned by the Brighton and Hove council leader Phelim Mac Cafferty, who said, "It is incredibly disappointing to see the irresponsible actions of a few putting in danger the many.

[97] During his speech, Corbyn said that complying with the government's vaccine rollout was the same as the German people submitting to Nazi rule, stating, "You know what happened in Germany... they believed in Hitler.

[101][102] In September 2021, Corbyn staged a protest outside the Old Bailey in London, on the day former Metropolitan Police officer Wayne Couzens was being sentenced for the murder of Sarah Everard.

The protest was widely seen as inappropriate given the highly disturbing and emotive nature of the Everard murder, and a passerby approached Corbyn shouting "How dare you hijack Sarah's death for your own cause?".

There, he featured in another music video, this time alongside rapper Remeece, in which they walk through crowds of protestors whilst repeatedly calling for viewers to refuse to take the COVID-19 vaccine.

[104] In a later speech at the demonstration, Corbyn's comments on these proposals to enforce guidelines to combat the spread of the Omicron variant of the virus were met with widespread backlash.

Home Secretary Priti Patel responded to online footage of Corbyn's speech, describing it as "sickening" and called for the police to take action against him.