A major operation is underway to prevent a terrorist attack on the rail network during the Olympic Games.
For the first time many passengers will see armed British Transport Police at our stations. Mike Pearse spoke to BTP Deputy Chief Constable Steve Thomas about the measures.
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Radical new trains that will carry millions of passengers on the Thameslink network will be launched today.
Tuesday morning's forecast for the east of the region
Tuesday morning's forecast for the west of the region