part of the ongoing Provisional IRA/Official IRA feud. 12 November 1975: a civilian (John Batey) was killed when an IRA unit threw a bomb into Scott's Restaurant, Mount Street, Mayfair, London. 16 November 1975: an RUC officer (Joseph Clements, aged 48) on mobile patrol, was killed in a land mine attack, near Sixmilecross, County Tyrone. 18 November 1975: two civilians, Audrey Edgson (aged 45) and Theodore Williams (aged 49) were killed when an IRA unit threw a bomb into Walton's Restaurant, Walton Street, Chelsea, London. 21 November 1975: a British soldier (Simon Francis, aged 29) was killed by an IRA booby-trap bomb hidden in an abandoned rifle close to a crashed car, Carrive, near Forkill, County Armagh. 22 November 1975: three British soldiers (James Duncan (19), Peter McDonald (19), and Michael Sampson (20)) were killed in a gun battle when an IRA unit attacked their undercover observation post at Drummuckavall, County Armagh (see Drummuckavall ambush). 25 November 1975: two RUC officers, Samuel Clarke (aged 35) and Patrick Maxwell (aged 36), were killed when their mobile patrol was caught in an IRA sniper ambush in Clonavaddy, near Ballygawley, County Tyrone. In a separate incident a UDR soldier, Robert Stott (aged 22), was shot dead by the IRA outside his home in The Fountain area of Derry. 27 November 1975: the IRA killed businessman and TV personality Ross McWhirter (aged 50) at his home, Village Road, Enfield, London; he had offered reward money to anyone who would inform on the IRA. 1 December 1975: two IRA volunteers, Laura Crawford (aged 25) and Paul Fox (aged 20), died when killed when the bomb they were transporting exploded prematurely at a car park, King Street, Belfast. 6 December 1975: two IRA volunteers, Sean Campbell (aged 20) and James Lochrie (aged 19), died when the landmine they were setting exploded prematurely, Kelly's Road, Killeen, County Armagh. 6–12 December 1975: four IRA volunteers held two people hostage in the Balcombe Street Siege. 18 December 1975: the IRA killed two British soldiers, Cyril McDonald (aged 43) and Colin McInnes (aged 20), in a bomb attack, Bank Place, near Guildhall Square, Derry. It was later established that the soldiers had been lured out of their sangar by children who offered them sweets. While the soldiers were distracted IRA volunteers lowered a bomb onto the roof of their sangar which exploded a few minutes later. 1976 5 January 1976: