COSS (Controller of Site Safety) – Rail Safety Critical Roles

Locations Across London Teamforce Labour are currently seeking experienced and safety-conscious COSS personnel for a range of upcoming Rail Safety Critical assignments across London and surrounding areas. These positions involve working on infrastructure, maintenance, and possession-based rail projects for leading contractors within the UK rail sector.
We are looking for reliable individuals who can demonstrate strong safety leadership, operational awareness, and a proactive approach to site compliance within live railway environments.
Job Details
Position: COSS (Controller of Site Safety)
Location: Various sites across London
Shifts: Days, Nights & Weekend Possessions Available
Duration: Ongoing opportunities
Start Date: Immediate starts available
Rates: Competitive rates available (dependent on shift pattern and experience)Role & Responsibilities
Carry out COSS duties in accordance with Sentinel and Network Rail standards
Ensure safe systems of work are implemented and maintained on site
Conduct site briefings and safety communications with work groups
Coordinate protection arrangements and maintain operational safety compliance
Monitor workforce safety, site access, and work activities during possessions
Liaise effectively with Engineering Supervisors, PICOPs, Site Managers, and rail teams
Ensure all works are completed safely within planned possession times
Maintain accurate documentation and safety records where requiredRequirements
Valid Sentinel Card with in-date COSS competency
In-date PTS certification
Previous experience working within Rail Safety Critical environments
Good understanding of Network Rail standards and site safety procedures
Ability to work flexible shifts including nights and weekends
Strong communication and leadership skills
Full PPE suitable for rail environments
Additional competencies such as ES, PC, IWA or SWL would be advantageousWhat We Offer
Ongoing rail infrastructure and possession work across London
Flexible shift patterns
Competitive rates and weekly pay
Opportunities to work on major rail projects
Supportive and professional team environmentIf you are an experienced COSS looking for your next opportunity within the rail sector, we would like to hear from you.
Apply today with your up-to-date CV and Sentinel details.

Equal Opportunities Statement:

Teamforce Labour is an equal opportunities employer. All applications will be reviewed based solely on merit, skills and experience, regardless of age, race, gender, disability, religion, or any other protected characteristic. If you require reasonable adjustments during the application or interview process, please inform us in advance.

About Us:

Teamforce Labour is a trusted and accredited supplier of skilled personnel to the Energy, Rail, Infrastructure, and Construction sectors across the UK. We are committed to delivering quality and safety across all aspects of our work while supporting diverse and inclusive hiring practices