The helpline is intended for use by passengers travelling imminently after 31 December 2024 who have issues with their eVisa.
The Home Office has said:
From 9am GMT on the 31st December 2024, the passenger support helpline can be contacted on 0800 876 6921. Calls to this number are free of charge. If you cannot contact UK 0800 numbers, you can contact 0203 337 0927, which may incur charges. The passenger support helpline will be available 24/7 for people who are travelling imminently. UKVI contact centre staff operating this service will not be able to resolve technical issues or contact carriers.
Contact our friendly team today if you require any assistance with your eVisa or any other immigration matter.