If you are applying to extend your visa under the points-based system, all working and student routes, visiting routes, long residency routes and discharged HM Forces and UK ancestry routes, new rules will now apply.
If you have limited leave to enter or remain in the UK and wish to extend your visa, you must apply to UKBA within 28 days of your current visa expiring. Your application for further leave will be refused if you have overstayed your visa by more than 28 days when you apply.
If you have no right to be in the country UKBA expect you to leave voluntarily and we will enforce your return if you fail to do so and the person may be subject to a ban on re-entering the UK.
Further information on the changes can be found in UKBA’s news story.