Police have released CCTV of the moment two armed robbers tried to hold up the Show Supermarket in Plaistow. When they left empty-handed the shop owner chased them and was shot in the chest at close range.
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Londoners who have received new electronic gadgets for Christmas are being advised to take simple steps to protect them from thieves.
The Boxing Day sales got off to a flying start with shops reporting a surge in business during the first hour of trading.
Bus strikes are planned for Monday 29 December and Monday 5 January.