Inspector Michael Edwards from the British Transport Police says cable theft is "an attractive proposition for would-be thieves", but that the police are cracking down on it.
More top news
Tomorrow Wales takes a radical new step in organ donation. Rob Osborne has been taking a look at what the future may hold.
Clips of Swansea from the 1950s and 1960s are proving a hit on social media with 30,000 views since they were published last week.
Gwent Police are appealing for information following a fatal crash at Junction 2 of the M48 in Chepstow.