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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Cloudy and windy in the East. Cloudy and mild, with patchy rain in West.
Most places dry overnight. Cloudier and windier during Sunday.
Cloudy and mild on Sunday, risk patchy rain in west.