Stephen Marsters
Security Operations Manager
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About
Security Operations Manager with over 15 years’ experience, progressing from frontline officer to managing £15m of security contracts across London and the South-East. Currently leads a 15-site portfolio for Balfour Beatty on the £9bn Lower Thames Crossing.
Experience
Operations Manager - H&M Security Services Ltd - London & South-East
(2025-09)
- Lead security operations for Balfour Beatty’s £1.2bn Roads North of the Thames package of the Lower Thames Crossing, the UK’s largest road scheme since the M25
- Manage 120 staff across 15 sites, including the Pilgrim’s Lane CCTV control room and mobile and static operations at Hole Farm, Green Lane, Long Lane, Early Works, Muckingford Road and Thong Lane
- Line-manage a Deputy Operations Manager responsible for rostering and short-notice cover
- Mobilised new sites, including Little Horsted, East Sussex, leading recruitment, interviews and day and night cover
- Primary contact for the client’s site and security leads; maintain compliance with Balfour Beatty’s MSite sign-in system, backed by an independent control room record of every shift
- Enforce site rules, PPE and toolbox talk standards; represented H&M at Job Centre recruitment days supporting the client’s social value commitments
Delivery Operator - Royal Mail
(2024-10 - 2025-09)
- Career transition role delivering a reliable, customer-focused service
Customer Service & Operations Manager - Profile Security Services / OCS - London & South-East
(2019-04 - 2024-09)
- Managed a £15m portfolio of security contracts and 75 officers for clients including Cushman & Wakefield, London Ambulance Service HQ, Magnox, Harwich International Port and SSE Nuclear
- Maintained 100% KPI compliance across multiple portfolios, with continuous improvement in KPI and SLA results
- Directed daily operations and workforce resourcing across high-profile and regulated sites, including nuclear and port facilities
- Introduced welfare initiatives that improved staff retention; mentored new managers and schedulers into leadership roles
- Delivered IOSH-compliant safety systems and risk management across the portfolio
Control Room Scheduler - Profile Security Services
(2017-04 - 2019-04)
Assistant Supervising Security Officer - Profile Security Services / United Guarding Services
(2012-02 - 2017-04)
Security Officer - First Security
(2010-02 - 2012-02)
