businesses pay their fair share of taxes PA General election: On the campaign trail Prime Minister Boris Johnson, Liberal Democrat leader Jo Swinson, First Minister of Scotland Nicola Sturgeon and Labour leader Jeremy Corbyn, during their successive appearances on BBC Question Time Leaders' Special at the Octagon in Sheffield PA General election: On the campaign trail Liberal Democratic Party leader Jo Swinson visits a primary school in Cambridge EPA General election: On the campaign trail Boris Johnson lays a brick during a visit to the Barratt Homes Getty General election: On the campaign trail Labour leader Jeremy Corbyn attends the launch of the party's election manifesto at Birmingham City University Getty General election: On the campaign trail Brexit Party leader Nigel Farage holds his party policy document duringthe party's policy launch in Westminster PA General election: On the campaign trail SNP leader Nicola Sturgeon joined Dundee East candidate Stewart Hosie to made a keynote speech at The Quay Getty General election: On the campaign trail Prime Minister Boris Johnson holds a part of an electrical appliance during a General Election campaign trail stop at Ebac in Newton Aycliffe AP General election: On the campaign trail Jeremy Corbyn poses during a visit to The Oatcake Boat on the Trent & Mersey Canal, Stoke Getty General election: On the campaign trail Jo Swinson and Willie Rennie Leader of the Scottish Liberal Democrats gesture, during a visit to Glasgow Reuters General election: On the campaign trail Prime Minister Boris Johnson during a visit to Jimmy Egan's Boxing Academy