Royal Mail delays are continuing as more postcode areas are being impacted by late deliveries. The delivery firm has confirmed postcodes across the UK won't receive mail on time today. As of Wednesday, April 15, 34 postcode areas are impacted. Royal Mail said: "We aim to deliver to all addresses we have mail for, six days a week. "In a small number of local offices, this may temporarily not be possible due to local issues such as high levels of sick absence, resourcing, or other local factors.