I'm in none of these Categories
- if you are coming to the UK as an academic visitor you do not need an ATAS certificate.
- if you are coming to the UK to do research that is not linked to any studies you do not need an ATAS certificate.
- if you are applying for an extension for the sole purposes of writing up your thesis and/or doing a viva you will not need an ATAS certificate, unless your original leave to enter/remain as a student was granted after 30 November 2007.
- if you already have a valid visa you do not need to apply for an ATAS certificate unless you need to apply for an extension to stay in the UK in one of the above categories.
- you are studying a PGCE or Postgraduate Diploma.
more details on the Immigration Rules for any of the above categories can be found on the UK Border Agency website.