Postal service firm Royal Mail has announced plans to cut 2,500 head office and other support jobs by the end of 2027.

Frontline postal workers – posties and drivers – are not part of the proposed restructuring.

The cuts will represent about 2% of the 131,000-strong workforce.

Royal Mail said the workforce reduction, designed to improve efficiency, would be achieved through voluntary redundancies and people choosing to leave the company.

“These proposed changes remove duplication and allow us to invest further in the service we deliver for our customers,” said chief executive Alistair Cochrane.

Royal Mail has been struggling to meet its delivery targets for first and second class post, and has been fined by the regulator for missing targets in recent years.

Just over 75% of first class letters were delivered on time in the year to the end of March, far off its target of 93%.

Fewer people are sending letters, and the company has repeatedly said that its Universal Service Obligation (USO) – a legal requirement to deliver letters six days a week to every address in the UK – is outdated and needs reform.

Royal Mail, which is a separate from the Post Office, has faced years of criticism from politicians and the public over the slowness of its letter delivery.

The firm has said it is investing £500m over the next five years as part of its improvement plan.

It is owned by Czech billionaire Daniel Kretinsky’s EP Group, after his takeover was approved by shareholders at the end of April last year.

Kretinsky has previously said he will not walk away from the requirement to deliver letters throughout the UK six days a week, as long as he is running the service.