Around 800 jobs are being shed at Rolls-Royce, with uncertainty over posts at its site in Dunfermline.

The group has revealed plans to cut costs in its embattled marine business.

The engine-maker, which employs 400 people in the UK and around 4800 globally, said it was too early to say where the axe would fall.

It has a manufacturing site in Dunfermline in Fife as well as a large site in Bristol and offices in the Midlands.

Rolls-Royce said the job cuts will be made next year as part of an overhaul to make annual savings of around £45m to £50m.

The move comes after the group slashed its marine division workforce from 6000 last year as it battles against a slump in the offshore oil and gas market caused by low crude prices.

It announced 1000 job losses in the business in May and October last year.

A spokesman for the company said all parts of the marine business would be affected by the latest cutbacks.

He added the group would look to redeploy staff and avoid compulsory redundancies where possible.

The firm also plans to restructure the marine arm and cut senior management roles.

Mikael Makinen, president of the marine business at Rolls, said: "The ongoing market weakness that has followed the dramatic fall in the price of oil continues to have an adverse impact upon our order book and profitability.

"Reducing our workforce is never an easy decision, but we have no option but to take further action beyond the changes we have made to date."