As a backbencher, she campaigned against dangerous dogs and their owners, food poverty and loopholes allowing companies to avoid their health and safety responsibilities.

In February 2019, members of her local party briefly proposed motions of no confidence in her for "continually" criticising Corbyn.

[9] Her father, Howard, studied law at university and initially practised as a solicitor; he now runs a home-furnishings shop.

Her mother, Antonia, is an interior designer and children's book writer, wrote a musical hit that made the French charts in the 1960s, and was a counsellor in a palliative care unit.

[16] Berger then took on on a part-time basis and completed a master's degree (MSc) in government, politics and policy at Birkbeck, University of London.

[22][23][20] A later independent inquiry later cleared the NUS of failing to tackle antisemitism, but criticised the union for not having rigorous complaints procedures in place, and for "lack of proactive response to allegations of anti-semitism".

[10][14][17][24] She also ran a non-profit campaigning and education organisation working with democratic socialists and trade unions for peace and security in the Middle East.

[39][35] On 31 October 2010, Berger appeared in a BBC Radio 5 Live show which also featured among others Kelvin MacKenzie, the former editor of The Sun.

Berger responded to criticism on her Twitter feed, writing: "Was there for the MP bit with Amber Rudd, wasn't told before who the other guests were".

[44] She said moves to effectively ban the use of Twitter were "anti-democratic, regressive and bemusing to the public," and that "It's a very useful way to connect with communities we were elected to serve.

[54] Berger described receiving a 'torrent of anti-Semitic abuse' beginning from her selection as prospective parliamentary candidate and election as an MP.

[56][57] In October 2014, Garron Helm, a member of the neo-Nazi National Action youth group, was imprisoned for four weeks after he sent an antisemitic tweet to Berger in August 2014.

In her view, the site "could start by proactively banning racist words which aren't allowed to be printed in newspapers or broadcast on TV that could never be used in a positive way".

[62] During the 2015 general election campaign, UK Independence Party prospective parliamentary candidate for West Lancashire, Jack Sen tweeted at Berger, "Protect child benefits?

[63] Joshua Bonehill-Paine, a supporter of the aforementioned Garron Helm and a self-described far-right antisemite, was convicted of racially aggravated harassment of Berger in December 2016.

[64][65] In February 2017, John Nimmo was sentenced to 27 months in prison after pleading guilty to nine charges, including sending Berger death threats and antisemitic messages signed "your friend the Nazi".

[66] After Berger asked Jeremy Corbyn's office in March 2018 why in 2012 he had queried the removal by a local council of an allegedly antisemitic mural by Mear One, she received further online abuse which she stated came from left-wing individuals.

[69] In July 2018, Jack Coulson, a teenager obsessed with neo-Nazism and who allegedly had told an acquaintance that he was going to kill Berger, was jailed for eight-and-a-half months for possessing a document for terrorist purposes.

[70] As Shadow Minister for Climate Change for three years,[71] Berger was critical of the Conservative government's actions on the environmental agenda.

[85] On 7 February 2019, Berger's Liverpool Wavertree constituency announced that two motions of no confidence in her had been submitted by local members, both condemning her for "continually" criticising the Labour Party leader.

[87] Labour's deputy leader, Tom Watson, defended Berger in the Commons, saying she had "our solidarity, our support, as she battles the bullying and hatred from members of her own local party.

"[88] Former Labour Prime Minister Tony Blair called Berger's treatment "shameful", and said: "The fact that someone like Luciana Berger – who is a smart, capable, active member of parliament doing her best for her constituents – the fact that she should even be subject to a no-confidence motion with this type of allegation swirling around is shameful for the Labour party.

"[89] On 18 February 2019, Berger and six other MPs – Chuka Umunna, Chris Leslie, Angela Smith, Mike Gapes, Gavin Shuker and Ann Coffey – resigned from the Labour Party in protest at Jeremy Corbyn's leadership to form The Independent Group, later Change UK.

They subsequently gained four additional members, bringing their ranks to eleven in total: adding Labour's Joan Ryan but also the Conservatives' Anna Soubry, Heidi Allen and Sarah Wollaston.

[99] When Jo Swinson was elected new Liberal Democrat leader in 2019, Berger was appointed the party's spokesperson for health, wellbeing and social care.

[100] Berger was selected as the Liberal Democrat candidate for the Greater London constituency of Finchley and Golders Green at the 2019 general election.

[105][106] In an interview for Jewish News in June 2021, Berger shared that she had "absolutely no regrets" in her decision to leave the Labour Party, and hinted at a possible future return to frontline politics.

[111] Berger married Liverpool music manager Alistair Goldsmith at the city's Princes Road Synagogue in June 2015.