UK Visa Extension
You may be able to extend your visa as long as the total time you spend in the UK is less than 6 months – For example: if you apply for a 3 month visa, you can apply to extend it for 3 more months.
You should apply before your current visa expires.
How to extend your visa
2. usually on the same day if you use the premium service
You will be contacted if your application is complex and will take longer, example:
1. if your supporting documents need to be verified
2. if you need to attend an interview
3. because of your personal circumstances (for example if you have a criminal conviction)
Once you have applied you can stay in the UK until you’ve been given a decision, as long as you applied before your last visa expired.
How long you can stay
You can stay in the UK for a maximum of 6 months. If your original visa is for less than 6 months, you can only extend it to the maximum of 6 months.