There are reports that Derby-based company Bombardier has lost out on the £1.6bn Thameslink contract putting jobs under threat.
Around 1,400 jobs have already been lost since German firm Siemens was originally announced as the preferred bidder to provide the 1,200 carriages two years ago.
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The shoes date back to 1690 and are thought to be worth hundreds of pounds.
Detectives are appealing for witnesses after the assault was reported earlier this month.
A candle-lit vigil was cut short after a man started shouting.