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24 hour security and mobile support services

Phase One is a security and support services company which provides security guards, mobile patrol services, electronic security and commercial support services.

Phaseone is a security and support services company in Sussex which supplies security guards, mobile patrol services, electronic security and commercial support services.

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A comprehensive range of security guarding and safety services for commercial and education sectors.

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24 hour keyholding, mobile patrol and alarm response throughout the UK for both homes and businesses.

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Electronic security systems supplied and installed for homes, small businesses and construction.

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Commercial cleaners, caretakers & temp staff are just some of the support services Phaseone provide.

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A trusted source for security services

What we do?


Innovative technologies

Our approach to innovative practice is embedded within our culture and actively feeds into everything we do.

  • Online reporting systems

  • Detailed risk analysis

  • Live Scheduling

  • Body cameras & guard tour

  • Time and attendance

  • Online e-learning

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Why choose us?

24 hour services

Fully Accredited

25 Years Knowledge

Customer Support


Rapid Response

86% Retention

Comprehensive Cover


Reviews from our clients

Phase One Security Company Sussex

All of the Phaseone staff were really great. They were so friendly which is exactly what we wanted, and were all really helpful. I was particularly impressed with your supervisor who really helped us on organising the process and positions of the guys when escorting artists to & from their vehicles.

Phase One Security Guard Company Sussex

Phase One Security and Support Services has fulfilled my security needs to the highest standards and has done so in a professional and diligent manner at all times responding to challenging circumstances . I would not hesitate to recommend Phaseone Security Services for any security requirements that any companies may require.

Phase One is a reliable security company in Sussex

I am absolutely delighted with the service I received from Phaseone Security. The alarm was installed quickly and with no mess at all. We have a caravan and use it most weekends over the summer period and I feel much better about leaving my home empty during this period as I know it’s being monitored for us. That peace of mind really is worth every penny.

Phase One Cleaning Company Sussex

The service we receive from Phase One Cleaning Services is fantastic! We would absolutely recommend them – a brilliant cleaning company.

If you’re looking for a reliable security service contact Phaseone now.

Sussex Security Company Phaseone

Phaseone Security and Support Services have provided a very reliable and effective security service to East Sussex Healthcare for 2 years. We have found their employees to be highly professional and efficient. I would not hesitate to recommend the services of Phaseone security to any future prospective business.”

Keyholding Alarm Response Sussex

I just wanted to give you some feedback as per your request. I am very happy with the security guards you provided last week, they kept me well informed during the night and up to date with everything that was going on. I would not hesitate in recommending your services to others and would use you should we require security in the future.

About Phaseone


Employee of the Year

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