Rolls-Royce has announced a £150m investment in new and existing civil aerospace facilities in the UK to support the planned doubling of engine production.

The investment, scheduled to take place over the next few years, is part of Rolls-Royce’s ongoing industrial transformation and will provide additional capacity to support development and testing of the next generation of aero engines.

The majority of the investment will provide a new facility for the testing of large civil aero engines in Derby, the home of Rolls-Royce’s civil aerospace division. The new testbed will be capable of testing a range of engines including the Trent XWB, which powers the Airbus A350 XWB.

There will also be investment in the large engine Maintenance Repair & Overhaul (MRO) facility in Derby, as well as in manufacturing facilities in Derby and Hucknall, Nottinghamshire. The company has also committed to retaining the Precision Machining Facility (PMF) in Derby, which it previously announced would be closed.

The British engine-maker is currently in the midst of a restructuring programme launched in November 2015, designed to achieve annual incremental gross cost savings of £150-200m. In November 2016, chief executive Warren East said that the programme was on track and that cost savings were expected to be at the top end of the target range, including an estimated £50m in 2016 and $90-120m in 2017.