Royal Mail investigated again as almost a quarter of first-class post arrives late
Ofcom has opened another probe into Royal Mail after 24.3% of first-class letters arrived late, with second-class service also missing target.
Intelligence analysis by GPT-5.4 Mini

Ofcom is again examining Royal Mail’s delivery failures after first-class performance worsened and second-class mail also fell short. The company says it is investing £500m and modernising, but regulators are weighing whether parcel prioritisation and other factors breached its obligations.
Royal Mail is being checked again because too many letters are arriving late. Think of it like a school bus that keeps showing up after the bell, even after being told the route must be on time.
The rules say most first-class letters should arrive the next working day, but Royal Mail missed that goal again. It also missed the target for second-class letters.
The company says it is spending money to fix the system and make it better in the long run. Regulators are trying to figure out whether the company is following the rules or putting parcels ahead of letters.
Analysis
What happened
Ofcom has opened another investigation into Royal Mail after the company again missed its delivery targets. Royal Mail said 24.3% of first-class mail arrived late in the year to the end of March, worse than the 23.5% recorded in the previous year.
The regulator requires 93% of first-class mail to be delivered within one working day, excluding Christmas. Royal Mail also fell short on second-class post, delivering 90.2% within the three-working-day target versus Ofcom’s 98.5% benchmark.
Why regulators are looking closely
Ofcom said it will examine all relevant factors, including whether Royal Mail is prioritising parcels over letters. That claim has been raised by whistleblowers and unions, while the company denies it. If Ofcom finds a breach, it has said it may impose a financial penalty.
This is not an isolated issue. Royal Mail has not hit its first-class target since 2017 and has failed the second-class target since 2020. The company has already been fined £37m since 2023 for repeated misses, and Ofcom fined it £21m in October.
Bigger business context
The story sits inside a longer decline in letter volumes. Royal Mail said it delivered 20bn letters a decade ago, but that figure has fallen to 6.7bn and could drop to 4bn within four years, while the number of addresses served has risen by 4m. Royal Mail says it is investing £500m over five years and that recent service reforms are meant to improve quality over time.
Key points
- Ofcom has launched another investigation into Royal Mail after it missed annual delivery targets again.
- Royal Mail said 24.3% of first-class mail arrived late in the year to the end of March.
- Second-class delivery also fell short of Ofcom’s target, with 90.2% delivered on time.
- The regulator will examine whether parcels are being prioritised over letters, which Royal Mail denies.
- Royal Mail says it is investing £500m over five years and modernising its delivery model.
If the investment and service changes work, Royal Mail could improve delivery quality and restore some trust with customers. A clearer, more modern postal model could also help it cope with falling letter volumes while keeping nationwide service viable.
If performance keeps slipping, Ofcom could impose another fine and Royal Mail could face more public criticism. Continued delays may also deepen doubts about whether the universal service can work under current demand and cost pressures.



