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Why Us?

The natural choice.

Smarter Security. Personal Delivery.

At First Security our focus is on providing our clients with smarter security solutions, tailored to their individual requirements and delivered with unrivalled care and consideration.

We understand that the service we provide to our clients must reflect changing and varied needs. We provide a tailored, future-proof solution rather than a generic response. Powered by Interserve, our range and depth of experience across the commercial world has provided us with the insights to look beyond today and the everyday to develop solutions based on our client’s environment, brand, business performance and reputation.

From strategic future-proof planning, to providing best in class Security Officers, we serve and protect retail stores, leading banks, investment houses, distribution and data centres, retail and business parks, leading exhibition, arts and cultural centres, as well as the professional services sector.

The facts behind the brand:

• 2,200 manned guards working 24/7, 365 days a year

• Supporting over 300 clients across the UK

• Top ten SIA licensed manned guarding company

• Rated in top 2.5% of security providers by the Approved Contractor Scheme Accreditation

• 25 years experience delivering services to commercial organisations

• Powered by Interserve, the FTSE 250 support services company

• Dedicated central London National Communications Centre answering 7,000 support calls a week

• Security Excellence Award Finalist for the last two years


Interserve Security (First) Limited currently holds SIA SIA Approved Contractor scheme (ACS) approval for the provision of Security Guarding, Door Supervision, Key Holding, Close Protection, CCTV.