The daughter of one of the soldiers killed by the IRA in the Hyde Park bombing is demanding more than £750,000 in damages from the prime suspect, after recalling how as a four-year-old child she watched her father leave the barracks on horseback, never to return. Lance Corporal Jeffrey Young, 19, was one of four members of the Royal Household Cavalry to be killed when Republican terrorists detonated a car bomb close to the Changing of the Guard in July 1982. Yesterday his daughter, Sarah Jane Young, was joined by relatives of the other murdered soldiers as they went to the High Court to demand "substantial damages" from convicted IRA member John Downey. The 68-year-old had been due to stand trial in 2014 for the atrocity, but the case collapsed when it emerged that he had been given a 'comfort' or 'on the run letter', as part of the peace process, which gave him immunity from prosecution. Last year a judge ruled that Downey, who now lives in a luxury lakeside house in County Donegal, was an "active participant" in the bombing and was jointly responsible for the attack, which left 31 other people injured.