When applying, make sure, that you fulfil the following criteria:
- You come from a country outside the EEA or Switzerland
- You would like to work in the UK for a short period of time (including training and research) though a recognised government authorised exchange plan or an Overseas Government Language Programme
- You have obtained a valid certificate of sponsorship in the form of a reference number
- You have appropriate funds to support yourself on your bank account for ninety days before you apply (with some exceptions)
You need to apply at least three months before you are to start the work. You should receive the decision within three weeks.
The visa would be valid for twelve or twenty four months, depending on the circumstances.
You would need a valid passport and travel identification, tuberculosis test result (if you are coming from a certain country where the test is mandatory) and bank statements showing funds.
You can extend your visa before it expires, however you need to include all family members you have brought to the UK with you, in the application.
If you still meet the visa eligibility criteria, you can extend your stay in the UK for the duration of time listed on their sponsorship certificate in addition to fourteen days.
Some applicants can also switch to this visa.