Aluminium firm Hydro - with sites in Gloucester and Cheltenham - has been given a top environmental rating.

The international company, based in Norway, is number 38 in the Punchline Top 100 Gloucestershire employers, with 360 employees.

Its plants produce fabrication and components, extrusion die, casthouses, surface treatment and building systems.

Hydro is given an A+ rating in an annual report looking at sustainability and environmental, social and corporate governance (ESG) among the top 100 companies listed on the Oslo Stock Exchange.

Hydro is just one of two companies given the top grade.

The report by The Governance Group says the grade represents: 'Excellent reporting in line with best practice. Good description of material issues and relevant results. Clear strategy and specific, quantifiable targets.'

Pål Kildemo, Hydro's CFO said: "This is a recognition of the strong emphasis on ESG reporting Hydro has had over time. We see that accountable and credible reporting on environmental, social and governance issues gets increasing attention from our stakeholders, from financial markets and investors to media, legislators and society at large."