A union at the heart of a row over passport service staffing levels has suggested strikes may take place if the government does not review its "job cuts programme" - a move which could prompt further delays.
Paul O'Connor from the Public and Commercial Services Union said "all our industrial options" would be considered if discussions with the government did not come to a satisfactory conclusion to ease the current "crisis".
The Home Office has outlined how people who are facing delays to their passport renewal can get it fast-tracked for free.
If you are worried about your passport application not being ready ahead of your holidays, there are a few options available to you.
Photos shown to ITV News appear to reveal the scale of the backlog at the Passport Office, amid staff claims of "blind panic".