Relief Security Officer
Posted on October 6th, 2026
We have a great opportunity to join G4S as a Relief Security Officer, working on a high-profile security site in the Reading area, working in their Physical Security Operations Centre!
Contract Information:
Pay Rate: £13.85 per hour
Shift Pattern - No set shift pattern as this working on a relief style basis, you must ne fully flexible to work any day Monday - Sunday, including days and nights,
Shift Timings - 06:00 to 18:00 Days and 18:00 to 06:00 Nights
Hours per week: 42 hours per week
SIA Licences: Door Supervisor or Security Guarding
Security Clearance Required: SC Clearance
You will need to undergo Enhanced Background Checks prior to commencement of the role and be eligible to pass National Security Vetting (SC Clearance) which includes minimum 5 years residency in the UK.
You must have a Full UK Driving licence, which is a requirement to get to the site.
Your Time at Work
As a Relief Security Officer you will be responsible for:
- Monitoring multiple NESO sites using CCTV, Intruder Alarm, Access Control, and other security management systems.
- Receive, assess, and respond to security alarms and incidents in accordance with established incident management procedures.
- Handling inbound customer and stakeholder calls professionally, obtaining accurate information and recording details.
- Log, categorise, prioritise, and route incidents and service requests using approved systems and processes.
- Escalating security incidents and operational issues in accordance with defined escalation procedures.
- Maintaining accurate records of incidents, actions taken, and communications.
- Log faults or degradation of security/non-security systems and equipment.
- Contribute positively to team performance and support colleagues during periods of high operational demand.
- Ensure compliance with all relevant security procedures, data protection requirements, and organisational policies.
- Uphold and adhere to NESO values.
Our Perfect Worker
It is crucial to have great communication and customer service skills. All our admin is digital and paperless, so you'll need to be tech-savvy enough to use our digital devices.
Our perfect Relief Security Officer will need to be aged 18 or over, a confident communicator who is a team player with the drive to provide a friendly and professional service at all times.
Join G4S and you can also enjoy real career progression with a large international company - as the world's leading provider of security solutions, we offer loads of training and support. You'll be in safe hands from our induction and on-site training to regular reviews and welfare checks with our managers.
Key Information and Benefits
- 5.6 weeks paid holiday (8 of these will be in lieu of bank holidays - subject to shift pattern and accrual)
- Workplace pension scheme
- Life assurance benefit
- Contributory healthcare scheme
- Eyecare vouchers
- Employee discount schemes
- Progression, training & development opportunities
- Refer a friend scheme
Job Ref: 1G4S (G570)
G4S is a recognised Disability Confident Leader Employer, committed to fostering an inclusive workplace where everyone can thrive. We prioritise accessibility, support, and opportunity for all employees. Join our diverse and empowering team today!
About Staffline
Staffline are working in Partnership with G4S, providing a recruitment solution for security roles.
Please note that our job adverts are correct at the time of publication, but some details and job responsibilities are subject to change.
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