Royal Mail has issued an urgent warning that some deliveries in Wales and other parts of the UK may be delayed due to the ongoing heatwave. The postal service said it aims to deliver letters six days a week and parcels on Sundays, but extreme temperatures are affecting operations.
Heatwave Triggers Red Alert and Disruptions
The UK is experiencing an unprecedented heatwave, with a rare red alert declared across southern England, the Midlands, and parts of Wales including Swansea and Cardiff. Temperatures are forecast to reach 36°C today and 39°C tomorrow, potentially hitting 40°C. The heat has already caused school closures and train cancellations or delays.
Royal Mail stated: "Our posties and drivers are taking extra care in the heat to keep themselves and our customers safe... thank you for your patience if deliveries take a little longer." Several postcode areas, including Carmarthen (SA17, SA31, SA32, SA33) and Pontyclun (CF72) in Wales, are experiencing delayed deliveries.
Service Standards and Past Penalties
Despite the warnings, Royal Mail's air and road network has run according to schedule over the last 24 hours. The firm faces criticism over delayed deliveries and received a £21 million fine from Ofcom in October for failing to meet targets. In 2024-2025, only 77% of First Class and 92.5% of Second Class post was delivered on time.
This year, Royal Mail has set enhanced targets: boosting First Class Next Day delivery to approximately 85% within nine months, and achieving the 90% target set by Ofcom within a year.
COO on Investment and Reform
Jamie Stephenson, Royal Mail's chief operating officer, said: "We're putting significant investment into improving reliability and reaching these new delivery targets, but delivering lasting change across a network of this scale takes time." He added: "Universal Service reform is a key part of that, helping us adapt the network to reflect how people send and receive mail today while protecting the one-price-goes-anywhere service for the future."
Stephenson noted that the company plans to deploy a new delivery model to all offices by the Christmas peak period, with quarterly targets. Early performance this year shows they are tracking in line with the plan.
Full List of Affected Delivery Offices
Royal Mail provided a list of delivery offices experiencing delays: Ashington DO (NE22, NE63, NE64), Altens DO (AB10-AB12, AB35), Banbury DO (OX15-OX17), Bedford DO (MK40-MK45), Bicester DO (OX25-OX27), Bridge Of Don DO (AB22, AB23), Brierley Hill DO (DY5), Carmarthen DO (SA17, SA31-SA33), Carterton DO (OX18), Deeside DO (CH5), Dursley DO (GL11-GL13), Gosforth DO (NE3, NE13), Hailsham DO (BN27), Kidsgrove DO (ST7), Kingswinford DO (DY6), Lichfield DO (WS7, WS13, WS14), Llangollen SUDO (LL20), Margate DO (CT7-CT9), Nantwich DO (CW5), New Ferry DO (CH32, CH62, CH63), North Tyneside DO (NE25-NE30), Northwich DO (CW8, CW9), Oxford East DO (OX3, OX4, OX33, OX44, OX49), Patchway DO (BS32, BS34, BS35), Pontyclun DO (CF72), Southam DO (CV47), St Helens DO (WA9-WA11), Swindon DO (SN1-SN3, SN6, SN25, SN26, SN38, SN99), Teignmouth DO (TQ14), Tipton DO (DY4), Tiverton DO (EX16, EX18), Upton DO (CH30, CH49), Wallingford DO (OX10, OX49), Warrington DO (WA1, WA2, WA4, WA5, WA55), and Wolverhampton NE DO (WV11-WV12).
