What is a Counter Terrorist Check (CTC)/Level 1B Clearance?


Spinwell Global

Posted Mar 22, 2023

What is a Counter Terrorist Check (CTC)/Level 1B Clearance?

Counter Terrorist Check (CTC)/Level 1B

It is Cabinet Office policy that a CTC or Level 1B clearance must be formally reviewed after 10 years (5 years for non-List X contractors). The risk owner has the discretion to review a clearance at any time up to that point. They may adopt a policy of issuing shorter clearances to a particular category of employee (for example armed forces reservists; sub-contractors) as mitigation for a lower level of day-to-day personnel security oversight and/or carry out an early review in individual cases where a specific risk has been identified.

Who needs it and what it provides access to

Individuals who are to be employed in posts which:

What checks are involved

Spinwell has extensive experience in the UK’s Defence, security and public sector. Please contact us if you would like to find Security cleared candidates, a new role or would like to discuss how Spinwell can advise you in obtaining or holding a Security Clearance, by emailing advisory@spinwellglobal.com or by calling 0203 510 9454

*Information Source – gov.uk

 

Suggested Blogs

We’ve included a selection of additional job search and recruitment blogs below. Each one provides practical advice and deeper insights to support both candidates and employers in today’s evolving job market.

The hidden cost of a vacant corporate function

Nicole Kennedy

Posted Jun 26, 2026

The hidden cost of a vacant corporate function. And why public sector organisations keep paying it. How long has your…

Talent does not stop at borders. Neither do we.

Nicole Kennedy

Posted Jun 19, 2026

Talent does not stop at borders. Neither do we. The global talent market in 2026 is moving in all directions…

UK Cybersecurity & Digital Skills: Now a Board-Level Problem

Nicole Kennedy

Posted Jun 12, 2026

The UK cybersecurity and digital skills shortage is now a board-level problem Demand for cybersecurity, AI and cloud professionals is…