About Us

Who Are Thornhill Security Ltd?

With over 40 years of experience, Thornhill Security Ltd is an established security company based in Bristol, UK. We have our own Bristol Range of specialist key cabinets and safes and we provide locking solutions for the domestic, defence and commercial markets throughout the UK and also outside of the UK for international customers.  A lot of staff members have a high level of security clearance to enable us to work in very sensitive areas.  We have built a great reputation working with various Government Departments.

In addition to the sale of a wide range of security products including Safes, Vaults, Strongrooms, Access Control and Master Key Systems, Security Grilles and Cages we provide expert advice and installation services on secure rooms, luxury safes and high profile security systems.



At Thornhill Security we believe in maintaining high professional standards as both locksmiths and as safe suppliers. Since establishing over 40 years ago we strive to deliver an ongoing commitment to providing quality products, information, advice and service to our customers.

With this promise in mind, Thornhill Security are a professionally accredited company and members of four acclaimed associations to ensure our customers’ additional peace of mind.

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ConstructionLine Logo

Master Locksmith Association

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The MLA are a non-profit organisation who have established themselves as the largest and longest running Locksmith Association in the UK.

Founded with the purpose to set and promote standards of conduct, skills, ethics, practice and materials within the locksmith industry all company members are vetted, undergo regular inspections to ensure quality and employ locksmiths with recognised exam-based qualifications.

In addition the MLA are recognised as the authoritative body for UK locksmiths by a number of organisations including; Home Office; The Police; British Standards Institute; Risk Insight Strategy and Control Authority and European Locksmiths Federation. You can therefore be assured that Thornhill Security provide you with the highest national standards.

More information about the Master Locksmith Association can be found here.

British Safe and Vault Trade Association (BSVTA)

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British Safe and Vault Trade Association (BSVTA) is the new name for Eurosafe UK.

It is an association open to UK safe manufacturers and companies engaged, as a major part of their business, in the sale of safes, fire safes, security cabinets and vaults and vault doors. Lock manufacturers engaged in the business of safe lock sales and those in the UK Insurance industry and organisations involved in standards testing were also admitted to membership.

Eurosafe UK (now BSVTA) was established in February 2011 as the UK associate of its parent organisation, Eurosafe in mainland Europe.

More information about EuroSafe can be found here.


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As members of Safecontractor, at Thornhill Security we understand that health and safety is an important aspect of any business. 

As the fastest growing health and safety association in the UK, Safe Contractor review our health and safety policies, procedures and documentation ensuring the highest of standards. You can therefore buy from Thornhill Security safe in the knowledge that we take our obligations and responsibilities very seriously. For more information about Safe Contractor visit their website here.


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ConstructionLine are a public-private initiative between Capita and the Governments Department for Business Innovation and skills.

By standardising the pre-qualification stage they aim to make the process for construction related contractors, consultants and material suppliers more efficient for buyers and suppliers. 

This means that Thornhill Security have the relevant company information, policies and procedures; all of which are verified and accepted onto an approved database. 

More information about ConstructionLine can be found here.

Why Partner With Us?

Only The Best

Our products are of high quality and are accredited to UK and European Standards and UK Insurers. We only want you to sell the best!

Add to Your Business

With our Bristol Range of safes, key cabinets and security mirrors you can enhance and add to your current product range, and even target new markets.

We're here for you

Whether you already have experience in the security sector or you are new to it, we are here to provide friendly support from our experienced team.

Interested in Becoming a Distributor?

For everything you need to know about partnering with us, visit our dedicated page.

Frequently Asked Questions

With over 40 years of expertise in the safe and security industry, we have a wealth of knowledge that we can impart to you and our distributors. Got a question about any of our products, how we work or how to become a distributor, take a look at our FAQs. 

How can safes be fixed?

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Our safes can be fixed to a timber or concrete floor.

What are cash ratings?

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Our UK ratings are amounts Insurance companies will cover in a Safe overnight.  The Safes are certified by ECBS so the level of cover can be converted to Euros for example.

Have questions, or need advice?

Speak to one of our team today by emailing info@thornhillsecurityltd.co.uk.