Site Security Controller
Location: Cheltenham (on-site)
Salary: £44,000 - £50,000
Clearance: Highest level of UK government clearance
Define Possible at Northrop Grumman UK
What’s your possible?
At Northrop Grumman UK, you’re part of a team driven by curiosity, courage, and a commitment to shaping a safer, more secure future. Every day, we innovate where it matters most — solving tomorrow’s challenges and pioneering the technology and solutions of the future.
This mindset goes beyond our customer programmes; it’s the foundation for your career development and the positive impact we create within our communities.
The Opportunity
This is more than just a job; it’s a mission.
As our Site Security Controller for our Cheltenham estate, you’ll play a critical role in protecting our people, information, and facilities. You will be responsible for maintaining our physical and information security policies and ensuring our Government‑sponsored facilities remain accredited, compliant, and continually strengthened.
You’ll work closely with teams across the business — from Operations and Facilities to Programme teams and senior stakeholders — providing expert guidance, influencing decisions, and championing a strong security culture across the Cheltenham sites.
This role is central to our ability to deliver secure, mission‑focused solutions to our customers, and offers the opportunity to lead, shape, and elevate the security posture of one of our most important locations.
What You’ll Do
* Act as the security lead for all Cheltenham‑based Northrop Grumman UK sites, overseeing physical and information security standards.
* Build strong relationships with customer and partner Security Advisors, ensuring all accreditation requirements are understood, maintained, and proactively updated.
* Lead communication and engagement on security matters across Operations, Facilities, H&S, project teams, and business units.
* Provide expert security advice to stakeholders and teams, influencing decision-making and supporting secure business operations.
* Manage the Risk Management and Accreditation registers for the Cheltenham estate.
* Maintain and evolve Security Operating Procedures, delivering insights and recommendations to leadership.
* Act as the on-site lead for Business Continuity and Business Resilience activities.
* Mentor colleagues on security best practice, championing a proactive and positive security culture.
What We’re Looking For
* Significant experience in physical and information security within Defence or HM Government environments.
* Strong understanding of NPSA principles, accreditation guidelines, and GovS 007.
* Experience working with x‑Government partners and representing organisational security interests to HMG bodies.
* Excellent communication skills with the ability to tailor messages to different audiences.
* Experience conducting security investigations and producing detailed reports.
* Proven ability to identify, assess, and treat risks.
* Strong problem‑solving skills, attention to detail, and the ability to prioritise effectively in a fast‑paced environment.
If you don’t meet every requirement, we still encourage you to apply. We’re committed to building diverse teams with a range of experience, backgrounds, and perspectives.
Security Clearance
Due to the nature of our work, you must be Sole UK National to obtain the required clearance.
You must be able to gain and maintain the Highest Level of UK Government security clearance.
Our recruitment team can support you with any questions about the vetting process:
Benefits
* Flexible working options, including compressed fortnight
* Private healthcare
* Cash health plan
* Holiday buy/sell
* Career development and specialist training
* Performance‑based bonuses
* A range of wellbeing and lifestyle benefits
Why Join Us?
A Mission to Believe In
At Northrop Grumman UK, every role contributes to defending national security, advancing technological capability, and shaping a safer future.
A Place to Belong and Thrive
We value every voice. You’ll join an inclusive community where diverse perspectives drive innovation and where your wellbeing and development truly matter.
Your Career, Your Way
From career pathways to mentorship, technical training, and opportunities across the UK, you’ll have the freedom to shape your career in a way that works for you.
Ready to Apply?
Yes: Submit your application online.
Possibly: Speak to us — we’re happy to help:
No: Explore other opportunities. We’re growing across the UK.