Royal Mail warns of delays in more than 90 UK locations during heat warning

Royal Mail has warned customers of delays in more than 90 UK locations as extreme heat affects deliveries, collections and distribution during a rare red weather warning.

The warning, published on June 23, comes as the Met Office has issued a red alert for extreme heat and humidity across parts of England and Wales, with temperatures forecast to rise above 37C and potentially reach 38C to 40C in some areas. The UK Health Security Agency has also issued a red heat health alert for six regions of England.

Royal Mail said it had adjusted postal operations and that staff safety remained a priority. Reported protections for workers include UV-protective clothing, wide-brimmed hats, shade breaks and sunscreen.

What Royal Mail said

The company’s warning covers ongoing disruption to deliveries, collections and distribution. The initial report said more than 90 locations are affected, though the full list of postcodes and the expected length of the disruption remain unclear.

The heat event is part of a wider spell of severe weather already affecting public services and transport across the UK.

What to watch next

The main unanswered questions are whether Royal Mail will publish a full location list, whether the disruption will last beyond the current heat warning, and whether additional areas will be added if the weather alert expands.