Academic Technology Approval Scheme (ATAS)

The Academic Technology Approval Scheme (ATAS) is a Government verification scheme for International students. ATAS is compulsory for ALL International (Non-EU) offer holders who are applying for a programme that requires ATAS clearance. This includes current students who wish to change programmes from a non-ATAS programme to an ATAS programme, student visitors and study abroad students.

Do I need to provide an ATAS clearance certificate?

Having an ATAS clearance certificate is mandatory for ALL International (Non-EU) offer holders who wish to study in the UK on a programme that requires ATAS clearance.

This will affect you if are from outside the UK and you plan to undertake postgraduate research in one of the following disciplines:

  • Medicine
  • Biological Sciences
  • Veterinary Sciences
  • Physical Sciences
  • Mathematical Sciences
  • Computer Sciences
  • Engineering 
  • Technology disciplines

OR if you are applying for one of the following Postgraduate Taught courses:

  • H400 MSc (Eng) Advanced Aerospace Engineering
  • H300 MSc (Eng) Advanced Mechanical Engineering
  • F350 MSc Medical Physics & Clinical Engineering
  • F370 MSc Nuclear Science and Technology 
  • F351 MSc Radiometrics: Instrumentation and Modelling

OR if you are applying for an Undergraduate degree, Postgraduate Diploma or Postgraduate Certificate in one of the following disciplines:

  • Materials Science
  • Technology
  • Engineering
  • Mechanical and Aerospace Engineering
  • Avionic Systems and Pilot Studies
  • Physics (including Nuclear and Theoretical Physics)

If the criteria above applies to you and you do not have an ATAS certificate, your Entry Clearance application will be refused.

It is your responsibility to check if this scheme applies to you.

The following programmes have a deadline for applications of 31st July


Programme Code

Major Code

MSc Advanced Mechanical Engineering



MSc Advanced Aerospace Engineering



MSc Nuclear Science & Technology



Msc Radiometrics: Instrumentation & Modelling



MRes Biomedical Sciences and Translational Medicine



MRes Advanced Biological Science



What is a CAH3 code?

You will only need a CAH3 code if you are applying for a programme that requires an Academic Technology Approval Scheme (ATAS) certificate.

If this is the case, you will receive with your offer letter an ATAS Statement containing the relevant CAH3 code. If your programme does not fall under the ATAS scheme you will not need your programme's CAH3 code.

Further Information

Click on the following links to download further information:

The ATAS application is an online only process and is free of charge. The Foreign and Commonwealth Office (FCO) aim to process applications within 20 working days after the submission of the application. Processing times will increase between the months of April and September and can take 30 or more working days to complete. Details of applying for ATAS can be found on the Foreign and Commonwealth Office website.

If you require further help please contact

Information and assistance is also available from: