Securing Your World, One Client at a Time.
At a1 Security, we pride ourselves on being one of the most reliable and effective security companies in the UK. With over 25 years of experience, we have established ourselves as a trusted provider of tailor-made security solutions for a wide range of organisations in London and the Home Counties.
Our History
a1 Security Home Counties (UK) Ltd was established in 1995, and since then, we have grown to become a privately owned company with an enviable reputation for integrity and reliability. In 2005, we created a1 Training as a division of a1 Security to ensure that all our staff comply with the new Private Security Industry Act 2001, which requires all front-line security officers to hold a licence. We are proud to hold SIA Approved Contractor Scheme (ACS) status for the provision of Security Guarding and Key Holding, and we have achieved an extremely high score in our audit, putting us in the top 10% of security providers in the UK.
Our Mission
Our mission is to provide outstanding security services using outstanding people and technology, delivering a cost-effective security solution to all our clients. We strive to continually improve and develop our employees' skills to not only meet our clients' needs but also exceed their expectations.
Our Services
We offer a range of security services, including:
- Static Security: Our highly trained and licensed security guards provide a visible presence to deter potential threats and ensure the safety of your staff, customers, and assets.
- Mobile Patrols: Our mobile patrol service provides an affordable alternative to static security, ensuring that your premises are regularly checked and secured.
- Key Holding and Alarm Response: We provide a reliable key holding and alarm response service, ensuring that your premises are secure and that any issues are dealt with promptly and efficiently.
- Locking and Unlocking: Our trained security personnel can provide locking and unlocking services to ensure that your premises are secure and that you comply with relevant health and safety regulations.
- Escorting Service: Our escorting service provides a safe and secure way to transport staff, goods, and equipment, reducing the risk of theft, damage, or injury.
Our People
At a1 Security, we recognise the importance of our staff in providing quality and ensuring total customer satisfaction. We value our people and have made significant investment in the recruitment, training, and development of our team. We ensure that all our employees are SIA licensed, fully vetted, and DBS checked, and that they have the relevant experience and skills to provide excellent customer service.
Overall Impression and Quality of Service
The reviews indicate a general satisfaction with the service provided by A1 Security. Customers praise the professionalism, the location, and the staff, particularly Steve and Lyndon. The company is recommended for its faultless service and the value for money offered.
Training Quality and Instructors
The instructors at A1 Security, specifically Lyndon, are highly praised for their teaching skills and the quality of training provided. The training is deemed to be of high standard, and the staff is commended for their professionalism and ability to instil a sense of trust and comfort in the students.
Location and Accessibility
The office location of A1 Security is considered convenient due to its close proximity to the town centre, with good bus and train links. This accessibility is viewed as an advantage by the customers.
Variety of Courses and Affordability
A1 Security offers a wide variety of courses, including SIA and first aid at work, which is appreciated by the customers. The fees are considered reasonable, making the training accessible to a wider audience.
Recommendations and Positive Feedback
All reviewers highly recommend A1 Security to anyone requiring door supervisor top-up or other security training. The company is commended for its excellent customer service, professionalism, and value for money.

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