Rolls-Royce is putting £300 million into five British factories

Rolls-Royce said on Monday it will spend £300 million on the British factories that make and look after its engines. The money is spread across five sites. It is not a new plant. It is more engineering space, more maintenance capacity, and new machines in places the company already runs.

Derby, where the large civil engines are designed and built, gets the most. More than £140 million, on new engineering and manufacturing-services buildings and on more capacity to look after engines already in service. That work is due to be finished in 2028. If you overhaul a Trent, or you machine a part that goes into one, Derby is the address that just got bigger.

£140m+

Derby, civil engines and aftermarket. Due in 2028

£90m

Bristol, military engines. The programme runs to 2031

£43m

Inchinnan, near Glasgow, for machines that cut new components

£19m

Rotherham, the blade-casting shop

Bristol, Glasgow, Rotherham

Bristol is the military site, and it employs more than 3,500 people. About £90 million goes on the buildings and the kit: space for teams to work together, the computer systems, and more room to maintain, repair and overhaul engines. The programme there runs to 2031, which is a longer job than Derby’s. This is the site behind the MT30 marine turbine and, as a partner, the EJ200 in the Typhoon. It is also in the work for the next combat aircraft. The £90 million is an upgrade of that shop, not a new engine programme.

Inchinnan, outside Glasgow, gets £43 million for machinery that can make new engine components. That is a machine-tool order and a metals order, not a new factory. Rotherham’s advanced blade-casting shop gets £19 million. A blade is cast before it is machined, so the Rotherham money is earlier in the chain than the Glasgow machines. A further £5 million is for equipment at Ansty in Warwickshire. Add the published shares and you are at the £300 million the company announced. The splits are the useful part. A single national figure does not tell a supplier which gate to drive to.

What was not in the announcement

There is no jobs number. Derby and Bristol are not described as hiring rounds. They are described as buildings, machines and maintenance bays. The Derby money is as much about engines already flying as about engines still being built. Aftermarket is the repair and the overhaul: a blade, a casing, a module that comes off a wing and has to go back on. A firm that sells tooling, castings or repair work can treat the money as demand for that, between now and 2028 in Derby and out to 2031 in Bristol. A firm that read the announcement as a promise of headcount cannot point to a line in it.

There is also no new engine. The civil money sits under the Trent work and the aftermarket. The defence money sits under engines already in service and the early work on the next combat aircraft. John Healey, the defence secretary, presented it as support for the government’s industrial plans. Tufan Erginbilgic, the chief executive, talked about powering Britain’s future. Neither sentence is a production rate.

Read down the chain and the £300 million is one engine, touched in four places. A blade is cast in Rotherham before anyone machines it. The new machines at Inchinnan are for the components that come after that. Derby builds the civil engine and, just as importantly, takes it back when it needs an overhaul. Bristol does the same job for the military and marine engines, on a longer timetable. Ansty is the small one, equipment only. A supplier who covers more than one of those steps has more than one conversation. A supplier who only heard £300 million has not been told which conversation is theirs.