Our 'apply online' service for applicants in the UK will be unavailable between 08:00 and 23:59 on Saturday 3 December 2011 while we carry out essential maintenance.
During this time, applicants in the UK will not be able to submit applications, book appointments, pay for their applications online, or use our 'application form finder' tool.
'Apply online' in the UK is the only service that will be affected. Applicants outside the UK will still be able to apply online using our Visa4UK service.
The UKBA added: `Our sponsor licence application and sponsorship management system will be unavailable between 08:00 on Saturday 3 December until 16:00 on Sunday 4 December 2011 while we carry out essential maintenance.
`We will also carry out maitenance on Sunday 11 December 2011'.
The WorldBridge website will also be unavailable on Saturday 3 December between 08:00 and 10:00 (UK time) for scheduled maintenance.