An eminent naturalist has voiced concerns that a TV crew’s powerful floodlights could have put birds and red squirrels at risk at two beauty spots on Anglesey. The high-wattage lights were used to film night scenes for a Sky drama series, Under Salt Marsh, which is partly produced on the island.

The six-part series boasts a star-studded cast including Rafe Spall (The English), Kelly Reilly (Yellowstone) and Jonathan Pryce (The Crown). Filming initially took place in Gwynedd but moved to Anglesey in early December, with scenes recorded at Malltraeth and Newborough Forest.

Last Thursday, a lane on the A4080 Cob Malltraeth bridge was closed to accommodate two trucks carrying generators and crane-hoisted floodlights. Film location managers explained that the aim was to “cast light across the estuary” to “imitate moonlight”, with more lights set up half-a-mile along Malltraeth estuary.