£180 million worth of train carriages built at Derby-based Bombardier will be on show for the Transport Minister, Patrick McLoughlin, today.
The 130 carriages are being tested in London and will be rolled out across the city in December.
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Police want to speak to two men, after the victim was approached as he sat on a park bench with friends.
Mild, cloudy and damp.
Cloudy with rain to start, clearing later.