30 years experience
1496 Cameras Monitored
22357 buildings secured


Security Guarding by Delta One Security Services Ltd. trained and uniformed security officers gives you a significant on going deterrent to perpetrators of crime against your premises and property – 24 hours a day, 365 days of the year.

professional security services
Why Choose Delta One


We will supply you with a fully accountable, well managed Security Guarding service to meet you specific needs and within your security budget.

Our fully licensed Security Industry Authority (SIA) Security Guarding security officers are much more than night watchmen, as fully motivated, trained and dedicated security guards they give you peace of mind and security while providing an asset to your company.

Our Security Guards can call upon back up of our on-call team for support and are in regular contact with our central control room.


Delta One Security Services Ltd. Mobile Security Patrols are carried out by our patrol vehicles driven by our experienced, uniformed SIA licensed security officers.

When you engage our Mobile Security Services we will carry out different visits at random times so as not to develop a routine pattern. We will report upon the security of your premises and property as required.

To further enhance the security of your premises we also provide warning notices which are a high profile deterrent at the perimeter of your property.


Key Holding provides you with a rapid response and deployment of Delta One Security Services Ltd. security offices whenever and wherever an alarm activation is indicated day or night whether false or not – your first line of defence against any potential threat to your premises and property.

Our fully licensed Security Industry Authority (SIA) security officers will attend providing Alarm Response in one of our patrol vehicles, our offices will re-set your alarm and handle any threats or situations that occur.

We also offer Key Holding services to open and close premises, parks and cemeteries on behalf of companies, organisations and local authorities.


Night or day, all year round Delta One Security Services Ltd will respond to any alarm activation at your premises. As part of our Key Holding services Alarm Response provides you with a flexible and convenient security service in the event of any alarm activation by an intruder.

When an alarm is activated at your premise we can arrange, if required, to meet one of your staff members at an agreed location and accompany them into the premises to check security and carry out any further actions. If necessary we will assist emergency services in obtaining access.

Delta One Security Services Ltd. will provide this service as Key Holders using our own uniformed SIA licensed security officers.

professional security services
About Delta One


Delta One Security Services Ltd. was founded in December 1991 and is respected by many of the largest North East England companies, organisations, schools, colleges and local authorities a proven leading provider of professional security services. We offer your company: Security Guarding, key-holder, alarm response, CCTV installation and maintenance with 24 hour remote monitoring and voice over facility, intruder alarm installation and maintenance, access controls and mobile patrols.

Delta One Security Services Ltd holds SIA approved contractor status for the provision of Security Guarding and Keyholding services.

Delta One Security Services Limited was one of the first security service suppliers in the UK to be awarded the very prestigious Security Industry Authority award of ‘SIA Approved Contractor’. Having already obtained Quality Assurance Accreditation BSEN ISO 9001 : 2008, we were able to fast track our SIA Approved Contractor application.

The ACS (Approved Contraction Status) standard encompasses all aspects of business operations. It takes a holistic view of how well our organization is managed, how effectively we service our customers and how well we treat our employees. Our SIA assessment ensures we meet the requirements within the following nine categories: strategy, processes, commercial relationship management, financial management, resources, people, leadership, corporate responsibility and results. We did and Delta One Security Services Ltd. are proud to hold SIA Approved Contraction Status.