Margaret Charlesworth, together with other members of her family and other service families, wore special t-shirts in memory of the six soldiers who killed in a roadside bomb blast Afghanistan in March 2012.
Her son Private Anthony Frampton was 20 when he died alongside Corporal Jake Hartley, 20, Private Christopher Kershaw, 19, Private Daniel Wade, 20, Private Daniel Wilford, 21, and Sergeant Nigel Coupe, 33. Five of those who died were members of the Yorkshire Regiment.
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The man entered the Yousaf Newsagent, in Fraser Street, Burmantofts, and demanded cash on Sunday at around 5.30pm.
The pony, which is thought to be two to three years old, was discovered off Scawby Road in Broughton Vale on Saturday at around 6pm.
ISG says it is pulling out because of the increasing costs and delays caused by a legal challenge