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.
More top news
The 56-year-old woman has been released under investigation after the body of an elderly woman was found dead
Tanya Benjamin had met the victim through a friend and withdrew up to £70,000 within eight days.
The Olympic swimmer is up against two other athletes for the British Swimming award.