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Phase One Security Limited

Welcome to Phase One

SIA Approved Security CompanySecurity GuardsDoor SupervisorsKey HoldingAlarm ResponseMobile Security PatrolsTemporary CCTVSupport Services

With 25 years of collective experience, 10 years of active operation behind us and top 15% SIA ACS status, Phase One Security Limited represents the modern approach to security service delivery.

Security Services
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Any sector, across every hectare


Our on-site security services ensure you have the best calibre of security personnel to protect your people ..

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We have been providing door supervisors throughout the UK since 2007, specialising in tailoring our …

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We are dedicated to delivering low cost alarm response, keyholding and mobile patrol services at the highest ..

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Our mobile patrols are the ultimate low cost security service and at Phase One, our mobile response officers are ..

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Our security systems can be installed at any type of application and monitored 24 hours a day, 365 days a year.

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Support services

We also provide a range of complementary support services to secure, clean and protect your facilities 24 hours a day.

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We are a fully accredited security and support service company offering a range of on-site security ..

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At Phase One we make it our priority to provide our customers with a high quality and cost effective …

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About Phase One

Phase One is a Leading Provider of Security Services throughout the UK

Our total security management ethos of people protecting property based on your risks sets us apart from other security companies. We work in partnership with you to provide you with the right mix of security services for increased effectiveness and efficiency.

About us
London Security during Olympics
Security Officer with Back to Camera
Security Guard of the Year at Hastings Office
Security Guard Unlocking Building
Security Officer using Guardtour System
Door Supervisors at Ultra White Collar Boxing
SIA Approved Contractor

Phase One’s Quality, Environment and Professional Accreditation’s

As a professional and dedicated security service, at Phase One, we ensure we’re up-to-date on all the latest and best management systems, qualification, certifications and accreditations. This allows us to improve the standard of our work and enhance the quality of the services we offer.