Return to the European Parliament Corbett left the Van Rompuy cabinet in March 2014, in order to stand for election in the 2014 European Parliament elections as the Labour party's second candidate in Yorkshire & Humber. In Labour's internal ballot of party members to choose their candidates, Corbett came first (with the highest proportion of first preference votes of all new candidates in the country) securing him second spot on the list of Labour candidates, behind the sitting MEP Linda McAvan. Labour won two seats in the election in Yorkshire, and so Corbett was returned to the Parliament. In Parliament, Corbett returned to the Constitutional Committee and served also on the Fisheries Committee (as a full member) and the Economic Committee (as a substitute). He was elected again as Deputy Leader of the Labour MEPs in September 2014. He was again rapporteur for a new overhaul of Parliament's procedures in 2016 and 2018–19. On 25 October 2017 he was elected Leader of the Labour MEPs (EPLP) following the retirement of Glenis Willmott, defeating Siôn Simon and Clare Moody in the vote. As Leader of the EPLP, Corbett was a member of the Labour Party NEC and attended Shadow Cabinet. In these roles, he was heavily engaged in the internal party discussions that eventually led to Labour calling for a new referendum on Brexit. He spoke at some of the large marches in London and elsewhere calling for a peoples' vote on the final Brexit deal. In advance of the United Kingdom European Union membership referendum, Corbett launched an app called Doorstep EU for IPhone and Android in order to debunk myths about the EU, deliver authoritative briefings on key issues and detailed statistics of the EU's impact on the United Kingdom. He supported Yvette Cooper in the 2015 Labour Party leadership election, Owen Smith in the 2016 election, and Keir Starmer in the 2020 election. After Brexit In 2021, the European Parliament asked Corbett to represent it in the Common Secretariat running the Conference on the Future of Europe, while simultaneously being Deputy chef de cabinet to the Secretary General of the European Parliament. Other activities Richard Corbett versus the UK Independence Party Richard Corbett was an early critic of the United Kingdom Independence Party (UKIP). In June 2004, he drew attention, in The Independent newspaper, to UKIP links with the far-right British National Party in that year's local elections: