Ken Livingstone's campaign to be mayor of London hit by in-fighting Mr Chapman is a London borough councillor and full-time party organiser and Mr Dilks is a long-standing party press officer and former councillor. "Despite our best efforts to integrate, there are clearly two camps, as the mayoral campaign develops most unlike a Labour Party campaign - with the candidate, rather than the party, appearing to drive the agenda," they say. The case papers, which are circulating inside London Labour, have been passed to *The Sunday Telegraph* by a Labour activist. Labour MPs and London Assembly members privately complain that experienced campaigners are being cut out of the mayoral campaign by "cronies" of Mr Livingstone appointed without due process. When Ms Sohal objected to her treatment, she was sent home on what the documents say are trumped-up charges that she did not campaign in two council by-elections for which she was responsible. Witness statements in the papers suggest the allegations are untrue. Mr Heneghan called her in and "shouted" the charges at her, say the documents, giving her no opportunity to respond and leaving her "traumatised." She was then removed from her role in last month's Feltham by-election campaign, four days before polling, in front of other staff and an MP, Jim Fitzpatrick, making her feel "deeply humiliated and abused." In their statement, Mr Dilks and Mr Chapman say this "caused serious problems in [staff's] professional relationships with MPs and the candidate" and had a "debilitating effect" on the by-election team. Mr Livingstone, who was defeated as London mayor by Boris Johnson in 2008, will attempt to regain his old job in May. The latest opinion poll, published last week, put him on 51 per cent, two point ahead of the Conservative incumbent, having trailed him before that. Tensions inside Mr Livingstone's campaign have been rising since the party's London regional director, Hilary Perrin, was removed in October after saying that Mr Livingstone "cannot win" without changing his tactics. Her predecessor, Ken Clark, was removed in May after strongly opposing Mr Livingstone's decision to campaign for Lutfur Rahman, a man sacked as a Labour candidate for his close links to Islamic extremism. Mr Heneghan, their replacement, answers to Mr Livingstone's long-standing aide, Simon Fletcher, whose title is campaign chief of staff. "We are concerned that we appear to be on our third line manager in less than a year," Mr Dilks and Mr Chapman say in their statement. New people suddenly arrive to fill posts for which no one has seen a job advert or been given an opportunity to apply. The sudden and very public removal from the campaign of Hilary [Perrin] caused further turmoil and uncertainty within the core London team. The "growing tensions at our end of [Labour's] Victoria Street offices" make "effective and productive work more difficult at a time when all our efforts should be on delivering the best possible result in the Mayoral election," they say. Ms Sohal, who remains in her post, did not return repeated calls, emails and texts asking for comment yesterday. A Labour Party spokesman said: "We do not comment on staff matters."