An aeronautical company has made a financial contribution of more than £1m following a pollution incident that left about 1,000 fish dead, the Environment Agency (EA) says.

The incident happened in 2018 at Mettis Aerospace’s metals installation site in Redditch, following an issue with discharge from the surface water drainage system.

The problem resulted in a solution of caustic and sodium aluminate leaking into an unprotected surface water drain and into an adjacent watercourse, an EA spokesperson said.

The BBC has contacted Mettis Aerospace (MA), which has accepted the discharge from its site had caused the pollution incident, for comment.