Anti-fracking campaigners step up protests in Sussex

An energy company says it'll start test drilling for oil and gas at a site in Sussex this summer.

The firm called Cuadrilla plans to drill an exploration well near the village of Balcombe. But environmentalists say it could lead to "fracking", where underground rock is broken up.

The company says the process is safe, but others, such as Dr Mariann Lloyd-Smith of the National Toxics Network disagree.