Ofcom said that for the 2022-23 financial year – a time when it was hit by 18 days of strikes by frontline workers – Royal Mail’s reported performance results showed that it had only delivered 73.7% of first-class mail on time.
It added that just 90.7% of second-class mail was received on time. It also completed 89.35% of delivery routes for each day on which a delivery was required.
Under the rules, each year Royal Mail is required to deliver 93% of first class mail within one working day and 98.5% of second class items within three working days.
The target for completion of delivery routes is 99.9%.