Christmas dinner fatbergs raise flood risk, say water companies

People are being urged not to tip cooking oil down drain to prevent post-Christmas buildup of congealed fat in sewers

Christmas dinner with all the trimmings could lead to congealed cooking oil and grease blocking drains up and down the country, water companies have warned.

Engineers from Severn Trent Water have been digging tons of fatty gunk, which sets as hard as concrete, out of sewers in the West Midlands after reports of flooding caused by fatbergs.