This is the heartbreaking moment a London Marathon runner broke down in tears because staff had already started clearing the course and ripping up the timing mats when she was just halfway. Kerrie Aldridge, from Cardiff, who was raising money for the Miscarriage Association, recorded an emotional video live on Tower Bridge where she sobbed that 'they're already packing up' but vowed to continue to the finish. Her tearful outpouring comes as other slower runners share their own horrendous experiences of last Sunday's race - including Big Brother's Jack Glenny, who told MailOnline that stewards yelled at him to 'run fatboy run'. And social media has now erupted with former competitors claiming that back-of-the-pack participants have been subjected to 'disgusting' treatment for years. Choking on her words, Kerrie said: 'Hi everybody, so I’m still running, look what’s left, I’m halfway. 'The sweeper vehicle’s passed me, they’re packing up, but I don’t care. I’m going to keep going, thank you everyone who’s supported me.' Later, she wrote on her Facebook page: 'Next came Tower Bridge now I had always been told this would be the moment...crowds everywhere and a wall of sound there would hit you. 'In a marathon support page I had joined so many had talked about the emotion of this one moment. Jack Glenny, 24, who ran Sunday's race with his twin brother Joe, said that his seven-hour time was one of the 'proudest moments of his life' but ultimately ruined by nasty comments and mismanagement that made him feel like a 'nuisance' Big Brother's Jack Glenny, 24, who ran Sunday's race with Joe in aid of the Cystic Fibrosis Trust, said that one of the 'proudest moments of his life' was ruined by nasty comments and mismanagement that made him feel like a 'nuisance' 'Well Tower Bridge was there I welled up I knew this was roughly half way but there were no crowds there were just clean up trucks and lorries both sides of the roads and people going over the bridge going about there daily lives. 'It was heartbreaking I had worked so hard. My tracker was no longer working as they had taken the timing mats up.' London Marathon has come under renewed fire from runners who claim that slower competitors have been subjected to 'disgusting' treatment for years. Experiences of stewards hurling abuse at back-of-the-pack participants - such as yelling 'run fatboy run' - has provoked other dismayed runners from previous races to vent their own fury at organisation staff. Former Big Brother contestant Jack Glenny told MailOnline he would never take part in the event again after 'the proudest moment of his life was ruined' by cruel stewards who poked fun at his weight at made him feel like a 'nusiance'. She also hit out at the contractors for beginning the clean-up operation on sections of the course, including vital water stations, which were still being used by the slower runners One user, who shared a picture of two back-of-the-pack runners on an already cleared course, even implied that the problem stretched back as far as 2011 And one 2016 runner, replying to the 'horrific' experiences of a pace setter from last Sunday's race, said she found her own treatment 'disgusting' three years ago. Pippa Baird wrote: 'Me and my mum did the Virgin London Marathon in 2016. 'We were slow turtles and we had the exact treatment, it was awful and disgusting. 'I hated it by the end and it was just not enjoyable, if it wasn't for my mum in support I would not have finished! I ate more dust on the run than drank water! 'The hype is not worth it at all! If you're not a celeb or a fast runner you're not worth it to them, pointless letting slow people in they don't treat them right at all!' Her experiences were echoed by a 2015 runner, known as 'cen', who tweeted: 'The course was closed, we were hit by flying objects from the cleaning crew, marshals had given up. 'We were proud of our achievement but definitely did not get the experience.' Chris Bayley wrote: 'My wife did the Marathon in 2014 and had similar issues with being forced on to the pavements.' Social media has erupted with these former competitors taking aim at stewards for packing up the course early and shoeing slower runners off the track altogether And one user, who shared a picture of two back-of-the-pack runners on an already cleared course, even implied that the problem stretched back as far as 2011. They said: 'The way the London Marathon treated its slower runners has actually been happening for years.' Many of these distraught ex-competitors chose to share their negative experiences after Liz Ayres, a back-of-the-pack pace setter, confronted race director Hugh Brasher live on air yesterday about the brutal treatment suffered by contestants who were reduced to tears after allegedly told to 'get a f****** move on'. London Marathon bosses have vowed to conduct a thorough investigation after event staff reportedly hurled 'horrific' insults at slower runners this year. An apologetic Hugh Brasher, the race director, told MailOnline that an internal probe is underway to establish exactly what happened at the tail end of Sunday's race. And race sponsors Virgin Money said it was 'disappointing' that not all runners got to experience the 'very positive' event. One disheartened competitor, who has been put off ever participating in the race again, told MailOnline that stewards yelled at him to 'run fatboy run' and suggested that he should have started the course at the crack of dawn to finish in time. Liz Ayres, a back-of-the-pack pace setter, confronted race director Hugh Brasher live on air yesterday about the brutal treatment suffered by contestants, many of whom were left in tears One person who completed the course in 2015 said that she had a similar experience to Liz when she ran the race Big Brother's Jack Glenny, 24, who ran Sunday's race with his twin brother Joe in aid of the Cystic Fibrosis Trust, said that one of the 'proudest moments of his life' was ruined by nasty comments and mismanagement that made him feel like a 'nuisance'. The billings account manager, who competed the race in just over seven hours and raised £6,000, said: 'We felt extremely let down by the organisation, we were forced to move out of the way for a marshal van, workers were taking down barriers and posters the whole time. 'We were berated and told 'run, fat boy run' and then when we crossed the line, after having to move for some workers taking down the scaffolding, I overheard an official saying 'these lot should have left at 6am, the f****** amount of time it's taken them to run this!' 'I was extremely let down by this. We crossed the line after 7.04 hours. 'For seven hours you are constantly in pain, you are fighting to cross the line to raise money for charity and for it all to be dashed as you go along, due to what can only be described as poor management is disgraceful! Jack and his twin brother Joe were the first housemates in series 14 of Channel 5's Big Brother where they eventually placed 4th Jack has now vowed never to run the race again after he was left feeling dismayed at the treatment of the slower runners 'One of the proudest moments on my life was tarnished, and I would argue for us that took longer than the average marathon runner. 'I would say we worked harder, it took us longer, so why do we deserve to be treated worse?' Jack added that the supporters were great throughout but the officials seemed quite moody and begun clearing up sections of the course before they even got to it. He said: 'It was very disheartening and you feel like you're a nuisance. 'I know it sounds silly, but we weren't even allowed to run in the middle of the Mall. 'I know I'm a bit of a larger man but that doesn't mean that I don't deserve my moment. 'When we got to the finish a woman gave us a medal and just said 'here you go'. 'By this point I'm nearly crying and that's when I heard some officials say to each other 'they should have started at 6am'.' Jack and his twin brother Joe were the first housemates in series 14 of Channel 5's Big Brother where they eventually placed 4th. It comes after Liz Ayres, a back-of-the-pack pace setter, confronted race director Hugh Brasher live on air today about the brutal treatment suffered by contestants who were reduced to tears after allegedly told to 'get a f****** move on'. Hugh Brasher vowed to conduct a thorough investigation after street cleaners reportedly hurled 'horrific' insults at slower runners and even branded them 'fat' In a stinging attack, she directly accused Marathon officials of berating the slower runners. Liz told the BBC's Victoria Derbyshire programme: 'We had some that were saying, 'if you weren't so fat you could run faster'. 'We had, 'it's a race not a walk.' It was so horrible, it was like 'if you didn't eat as much, your t-shirt would fit.' 'These were from people wearing the London Marathon blue jackets, officials these were. 'Contractors were swearing at us constantly to f****** move out of the road and to get a f****** move on.' In a stinging attack on event staff, Liz directly accused Marathon officials of berating the slower runners Thousands partook in last Sunday's London Marathon but those at the back of the race were allegedly taunted by race officials and forced to run around the already underway clean-up Liz, whose job was to run at the tail end of the race to set a roughly seven-hour benchmark pace, said that she has been inundated with hundreds of messages from competitors of previous years who experienced the same comments. She also hit out at the contractors for beginning the clean-up operation on sections of the course, including vital water stations, which was still being used by the slower runners. Some runners also reported being hit by chemical spray used by cleaning teams to remove temporary road markings - with at least one participant apparently receiving burns. This year marked the first time that the London Marathon used official pacers for finishing times slower than six hours, meaning that slower runners were kept on track by a pace-setter. And her fury was echoed by many on social media who were also dismayed by the alleged lack of care for competitors at the back of the race. Kate Brittain, who took part in the Marathon, had a similar experience to Liz and tweeted: 'Was aiming for 6.30 but had a bad blister.