Ian McLoughlin, 55, today pleaded guilty at the Old Bailey to the murder of Graham Buck, who was stabbed when he went to the aid of his convicted paedophile neighbour during a robbery.
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Damon Smith from Newton Abbot was found guilty of planting a home-made bomb on the London Underground in October.
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Megan Hurley had reportedly been at the concert with her brother Bradley, 21, who remains in hospital after the terror attack.