Rebecca Long-Bailey - Labour MP for Salford and Eccles - and a former Shadow Cabinet Minister and party leadership contender
Samuel Kasumu - Former special advisor on race and communities to Boris Johnson while he was Prime Minister - who is running to become the Conservative candidate for Mayor of London
Lord Brian Paddick - Liberal Democrat peer, former Mayor of London candidate, and a former Deputy Assistant Commissioner in the Metropolitan Police
David Linden - SNP MP for Glasgow East - who is the party’s Work and Pensions spokesperson in Westminster
Cross Question with Iain Dale is live every Monday, Tuesday and Wednesday from 8pm and you can watch it live on Global Player.