Keyholding and alarm response services

Safeguarding your workplace

A keyholding service holds and safeguards a set of keys to your property.

On-call 24/7 subject to your specific contract, your NSI approved company will respond to an alarm activation, make routine visits to your premises including out of hours and/or oversee out of hours deliveries. Keys are stored with a secure ID. All processes and procedures are managed in accordance with BS 7984, the Code of Practice for Keyholding and Response Services.

All keyholding service providers will hold professional indemnity insurance, and evidence this on request.

Why choose an NSI approved keyholding company

NSI approved companies only deploy well trained, vetted, and licensed security officers, whether that be for routine patrols or alarm response.

They are able to conduct a thorough external and internal check of your premises, investigation of any security breach, reset the alarm systems and leave your business secure.  

You should expect an NSI approved company to respond to a serious incident, such as burglary, fire or flood, by remaining on-site, managing the situation on your behalf, including liaising with the Police.

The SIA licence for NSI approved companies

Every NSI approved company offering key holding must ensure the SIA licences of their deployed staff are up to date (SIA licensing does not apply to organisations whose operatives could be considered to be in-house i.e. not working for a security company). To obtain a licence the person must be at least 18 years old, pass an identity check and criminal record check.

The licence must be displayed at all times, so don’t hesitate to ask to see the licence if it is not visible. You can also check here to make sure the individual is registered.


NSI guarding companies are committed to:

At least twice yearly, independent, expert compliance audits

NSI Guarding Gold companies operate a Quality Management System

Screening every employee as required

Compliance with British and international standards including ISO 9001

The company you choose may be part of the SIA's Approved Contractor Scheme. This is increasingly becoming the minimum requirement for buyers of security services.

Learn more about security for your workplace

Security Guarding

Door Supervision

Event Stewarding

Transport of Cash and Valuables

Security Dog Handling Services

More About Security Systems

Learn more about fire safety for your workplace

More About Fire Safety

NSI Gold and Silver Medals - Signifying a companies approval with NSI

Look out for the NSI hallmark

It’s the most widely recognised mark of approval in security and
fire safety. NSI approval tells you the company is:


Technically Competent

Working to International and British Standards and NSI Codes of Practice, teams have relevant technical experience


Gold approval - operating a Quality Management System to ISO 9001 and NSI Quality Schedules


Reputable Directors & leaders with relevant business experience and effective employee security screening

Find an NSI approved company