High End Security Company London

London Security Company - K4S Security

K4S Security has become one of the fastest growing security providers across London. K4S, based in London with regional teams operating across the country, provide a high level of quality security services to our clients within both the private and public sectors. Reasons to choose K4S Security include:


• SIA Approved Contractors

• Privately owned and independent security company

• 24/7 control room and operational support

• All employees fully trained and appropriately licensed

• Customer focused approach


All London security operatives are fully vetted, trained and licensed by the SIA, and available 24 hours a day, 365 days a year.


K4S believe in building long term relationships with our clients, demonstrated by our high client retention rate. We achieve this by focusing on the delivery of our own high standards of service and a continual review of procedures to ensure our clients receive the highest quality service available and more importantly, peace of mind that their business is being protected in line with their requirements.

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K4S Security Limited are SIA Approved Contractors for the provision of Security Guarding Services

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