24-Hour Security Services in London — Protecting What Matters Most

Grosvenor Security offer professionally trained and experienced security guards that can be deployed on site throughout London within 4 hours. Our operations team carefully select guards according to the project brief and site requirements. All our guards are SIA licenced/trained and are fully screened and vetted to British Standards.

Some of the duties our guards carry out on site include:

• Regular internal/external patrols at hourly intervals to ensure constant physical presence on site.
• Keep a patrol log and get a hand over signature from the site manager at the start and end of the shifts.
• All incidents, sightings and suspicious behaviour will be reported to site management. Security guards will liaise with the emergency services in case of any incidents.
• We have 24/7 control room for immediate back-up and support.
• All our security officers are fully uniformed and take pride in their presentation as they are a figure of authority for the site and very often the first point of contact for our clients premises.
• Control and monitor the movement of vehicles and personnel to and from the site.
• Carefully apply their training, ensuring the premises are fully protected
• All our guards wear high viz vests, clearly identifiable as figures of authority

Types of 24-Hour Security Services We Offer

At Grosvenor Security, we provide a wide range of security solutions tailored to different industries and risk levels:

Manned Guarding

Highly trained, SIA-licensed security guards stationed on-site to prevent unauthorized access, theft, and vandalism. Ideal for offices, retail stores, residential buildings, and commercial premises.

Mobile Patrol Security

Random or scheduled patrols to monitor large areas or multiple locations. A cost-effective solution for warehouses, business parks, and industrial estates.

Construction Site Security

24/7 protection for construction projects to prevent equipment theft, trespassing, and vandalism. Includes access control and perimeter checks.

Retail Security

Professional retail security officers trained in loss prevention, customer service, and conflict management to reduce shrinkage and ensure a safe shopping environment.

Corporate & Office Security

Front-of-house security officers who combine safety with professionalism, managing visitor access and maintaining a secure workplace.

Residential & Concierge Security

Security personnel for apartments and residential complexes, providing access control, visitor management, and resident support.

CCTV Monitoring & Control Room Support

24-hour remote monitoring with rapid response coordination to detect suspicious activity in real time.

Event Security

Round-the-clock security planning and on-site officers for corporate events, private functions, and public gatherings.

Why choose our security guards?

• SIA-Licensed & Fully Trained Guards
• 24/7 Control Room Support
• Putting client needs first.
• Selected personnel for their commitment, professionalism, presentation and integrity.
• Flexibility of approach and constant availability.
• Site specific manuals and procedures.
• Short notice covers

if 24-hour security officers are not required, please consider our mobile patrols for random checks and a security presence.
While we operate mainly in Westminster, Camden, Greenwich & Lewisham, our security services are available to you throughout London.

Get in touch today for a FREE and no-obligation consultation with one of our security experts. You can call us on 0845 056 3790 or email us today.