The Passport Office chief executive Paul Pugh said the agency was facing a challenging situation the like of which has not been seen in recent years, after apologising for the delays.
He said the Passport Office is dealing with 480,000 applications. Around 90% are being processed within targeted time.
More top news
Low pressure will keep much of the British Isles under cloud with many seeing periods of steady rain throughout the rest of today.
Michael Bond, the creator of Paddington Bear has died at the age of 91.
Theresa May said the number of high rises which have failed fire safety tests has risen to 120.