Ofcom, which fined the company £5.6m for the same failure of its regulatory obligations last November, said Royal Mail took "insufficient and ineffective steps" to improve its performance this year.
Under the regulator's rules, Royal Mail must deliver 93% of first-class mail within one working day of collection, and 98.5% of second-class mail within three working days of collection.
Ofcom's investigation found that in the year to the end of March the company delivered only 74.7% of first-class mail on time, and 92.7% of second-class mail.
The company blamed its poor performance on its "challenging financial position", and delays to the ballot on a deal that followed last year's industrial action.
"We do not consider either of these to be justifiable reasons for Royal Mail's failure to provide the levels of service expected of it," said Ofcom.
"Ultimately, it is for the company to manage its financial position taking account of its obligations. Royal Mail took insufficient and ineffective steps to try and prevent this failure, which is likely to have impacted millions of customers who did not get the service they paid for."
Diese Geschichte stammt aus der December 14, 2024-Ausgabe von The Guardian.
Starten Sie Ihre 7-tägige kostenlose Testversion von Magzter GOLD, um auf Tausende kuratierte Premium-Storys sowie über 8.000 Zeitschriften und Zeitungen zuzugreifen.
Bereits Abonnent ? Anmelden
Diese Geschichte stammt aus der December 14, 2024-Ausgabe von The Guardian.
Starten Sie Ihre 7-tägige kostenlose Testversion von Magzter GOLD, um auf Tausende kuratierte Premium-Storys sowie über 8.000 Zeitschriften und Zeitungen zuzugreifen.
Bereits Abonnent? Anmelden
EU launches 290-satellite space programme as rival to Starlink
The EU has launched an ambitious €10bn (£8.3bn) space programme with a constellation of 290 satellites to rival Elon Musk's Starlink, further widening the post-Brexit security gap with the UK.
'A slap in the face' Workers alarmed at Walmart's retreat on diversity policies
A year after the murder of George Floyd, Doug McMillon, CEO of Walmart had a warning for corporate America. The death in 2020 triggered a wave of protest over systemic racism and was \"not an isolated event. We have a long history of racism, and we see unacceptable events continue.\"
Flogging Royal Mail to faraway owners is a gamble that may go horribly wrong for Labour
It is hard to see why the performance of Royal Mail should improve beyond what it could have achieved under its own steam
Inside the drug factory Plant produced Captagon pills that enriched regime
It was no secret: everyone seemed to know where it was. When asked for directions, the coffee vendor pointed up the hill.
Watchdog claims gambling giant 'at risk of criminal exploitation'
Australia's financial intelligence agency has taken the gambling giant Entain to the federal court, alleging it \"deliberately obscured the identities\" of high-risk customers and failed to stop a \"serious risk of criminal exploitation\".
More than 300 jobs to go at Lycamobile amid losses and VAT row
Almost 90% of Lycamobile's UK workforce have been told they could lose their jobs, the Guardian has learned, in an announcement that leaves more than 300 staff fearing for their roles shortly before Christmas.
Employment falls as companies respond to Labour's NICs rise
UK businesses are cutting staff numbers at the fastest rate since the global financial crisis, according to a closely watched business survey that blames the government's tax-raising budget.
Anger over US healthcare system is justified, says Michael Moore
Michael Moore, the Oscar-winning documentary maker reportedly mentioned in the manifesto of the suspected killer Luigi Mangione, has said anger expressed towards the health insurance industry since the killing is \"1,000% justified,\" but that he condemns murder.
Key minister quits Canada cabinet as tensions rise over Trump
Canada's minister of finance has resigned amid growing tensions with the prime minister, Justin Trudeau, over the threat posed by Donald Trump's \"America first\" economic policies.
Crime and tourism Alarm at civil role of army in Mexico
package holiday promises to whisk tourists in the Yucatan Peninsula from plush hotels to Mayan ruins on a new airline and freshly-laid train tracks - an adventure brought to them entirely by the Mexican army, which now does luxury tourism when not fighting crime.
