Head Of Security jobs in United Kingdom

Location: London (with travel to Gloucestershire, Suffolk, and occasional visits to Manchester)

Salary: Up to £95,000 negotiable depending on experience plus car allowance of £6,000 plus private healthcare and up to 10% bonus. 28 days annual leave + bank holidays, opportunity to buy and sell additional holiday, contributory pension up to 7.5% employee / up to 15% employer, opportunities for professional development, discounted gym memberships, etc.

Contract: Permanent, Full time. Closing date: Sunday the 11th of January 2026.

This is a senior leadership role at the heart of our security function. You will deputise for the Head of Security and play a pivotal role in ensuring the safety and security of a nationally critical project. From managing regulatory relationships to overseeing security assurance across our sites, this role offers the opportunity to influence strategy, lead a team, and work closely with government, regulators, and industry partners.

• Depute for the Head of Security and lead the security function when required.
• Manage two direct reports and oversee delivery across the wider security team.
• Own and deliver the Integrated Security Assurance Plan across all SZC sites.
• Lead regulatory interactions with the Office for Nuclear Regulation (ONR) and ensure engagement with other key stakeholders.
• Drive continuous improvement of security policies, procedures, and standards.
• Represent the organisation in external meetings and forums to promote best practice and compliance.

Relevant qualifications and experience in security leadership, regulatory compliance, and nuclear or critical infrastructure security preferred. Strong communication, strategic thinking, and team‑management skills are essential.