NSI Re-certifications – November 2025
Congratulations to the following organisations who successfully achieved their NSI re-certification in November 2025 for one or more approval schemes.
Re-certification audits occur at 3 yearly intervals and take place prior to the expiry of a company’s Certificate of Approval. The re-certification audit verifies a company’s ongoing demonstration of competency and professionalism and their commitment to NSI’s programme of annual audits for another three years.
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
Alpha Integrated Systems Ltd (Normanton)
ASM (London)
CIS Services Ltd (Rayleigh)
Electronic & Security Services Ltd (Belfast)
ESS Security Ltd (Leeds)
Graham Fire and Security (Belfast)
H3 Group (Swansea)
HF Fire & Security Ltd (Edinburgh)
J & F Poulton Ltd (Stourbridge)
Northwest Security Services Ltd (St Helens)
Olympic Fire and Security (Liverpool)
Status Security North East Ltd (Washington)
Vigilant Security Systems Ltd (Caterham)
Vindex Systems Ltd (Crawley)
Systems Silver
Action Alarms Ltd (Nottingham)
AJK Electrical & Security Ltd (Larbert)
Anderson Systems (Chelmsford)
COP Alarms (London)
DWM Technical Solutions Ltd (Wilden)
Flash Security Ltd (London)
Home Counties Security Systems (Harpenden)
Lucas Fire and Security Ltd (Barwell)
MDN Secure Ltd (Canvey Island)
Securaplace Ltd (Aylesford)
ARC Gold
ADT Fire and Security plc (Sunbury-on-Thames)
Advanced Independent Monitoring (Sunbury-on-Thames)
Conwy County Borough Council (Colwyn Bay)
Nottingham City Council (Nottingham)
Guarding Gold
Northern Security Ltd (Carlisle)
Fire Gold
Chilman Fire and Security Ltd (Kidlington)
Electronic & Security Services Ltd (Belfast)
ESS Security Ltd (Leeds)
Graham Fire and Security (Belfast)
H3 Group (Swansea)
HF Fire & Security Ltd (Edinburgh)
Olympic Fire and Security (Liverpool)
Vigilant Security Systems Ltd (Caterham)
Fire Silver
Flash Security Ltd (London)
EMS Gold
Northern Security Ltd (Carlisle)
WLS Ltd (London)
Jade Security Services Ltd (Reading)
Health & Safety Gold
Northern Security Ltd (Carlisle)
Life Safety Fire Risk Assessment Gold
Fire Protection Association (Moreton-in-Marsh)
FRSNI Ltd (Bangor)
Life Safety Fire Risk Assessment Silver
DDS Ltd (Sittingbourne)
FCS-Live Ltd (Newbury)