NSI New Approvals – March 2025

Congratulations to the following organisations who have successfully achieved NSI approval in March 2025 for one or more approval schemes.

Buyers who contract NSI approved companies for their security and fire safety needs can be assured of security and fire safety services delivered to the highest standards by businesses committed to quality and continual improvement.

NACOSS Gold

Opalstone Group Ltd based in Chipping Norton OX7 5XL

Phoenixtrescray Ltd based in London E1 8DZ

Fire Silver

Adept Fire & Security Ltd based in Bristol BS40 8BB

Spartan Fire and Security Ltd based in Airdrie ML6 8EF

Systems Silver

Spartan Fire and Security Ltd based in Airdrie ML6 8EF

Guarding Gold 

Alliance Mobile Security Ltd based in Weybridge KT13 8BL

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