Paul Watters, head of roads policy at the AA, has told the Sunday Telegraph that "most accidents" on the road happen in the dark.
We do know that most accidents happen in the dark. It's also comforting for people, especially if they arrive back from somewhere in the night, when they have got a late train.
There are also suggestions that it increases crime. So it may save money in terms of energy but then you have to look at the cost in terms of security, safety and accidents, it may actually be more.
More top news
The Duke and Duchess of Sussex were at Loughborough University where sporting stars of the future are trained.
Several sets including Linen Mill Studios are set to be open to the public by 2019.
Dame Kelly becomes the first Honorary Colonel to be appointed to a regular regiment.