Protecting what matters for more than 50 years.

Our story began when Peter Terry started his safe business from a floating pontoon in Woolwich. His practical knowledge of safes was matched by an understanding of the Thames tides, an important consideration when moving heavy safes around London.

Peter’s brother later joined him and the business grew rapidly. Peter developed a reputation for solving difficult security problems, leading to one of the defining innovations in TSI’s history.

When a bookmaker approached Peter for help with a serious hold-up problem affecting the industry, he combined the principle of a central-heating clock with a solenoid to develop the Terry Anti Hold Up Safe. The patented design delayed access to cash and dramatically reduced losses.

The innovation quickly gained recognition and was installed across bookmakers and quick-service restaurants around the country.

As security threats evolved, TSI continued to refine its products and ideas.

Customers increasingly looked to the business for help with more complex security challenges. TSI expanded beyond traditional safe work into additional physical security products, including ballistic screens and doors, while continuing to innovate around safes and time-lock technology.

The company’s reputation even extended beyond the security industry. TSI advised filmmakers on robbery scenes and appeared on the BBC’s Tomorrow’s World following the development of an anti-tampering device designed to protect the contents of a safe with dye.

At the heart of this growth was a simple philosophy: customers came to TSI because they trusted the company to solve problems.

As Peter explains:

“It was never the company going, ‘Oh there’s an opening there, we’ll go for that.’ It was always a customer saying we trust you as a company, can you help us with this?”

Listening first, solving problems and building trust remain central to the way TSI works today.

By the 1980s, TSI’s expertise was expanding beyond safes and physical security.

In November 1985, the company’s reputation for innovation was recognised with a Docklands Development Award, presented by then Chancellor of the Exchequer Nigel Lawson.

The very next day, the business received notice that its premises were subject to compulsory purchase as part of the development of Canary Wharf. TSI relocated to Canning Town and continued its development from new premises.

The late 1980s and 1990s marked another important stage in TSI’s evolution, including gaining NSI accreditation in electronic security.

In the mid-1990s, one of TSI’s bookmaker customers asked whether the company could also provide its intruder alarms and CCTV. The customer already trusted TSI and wanted one company to take responsibility for more of its security requirements.

That request helped shape the next stage of the business, enabling TSI to bring physical and electronic security together as a more complete package from a single trusted provider.

Technology continued to transform the security industry, and TSI continued to evolve with it.

In 2005, TSI moved from Canning Town to its current location in Purfleet. The new premises provided a modern working environment with convenient access to the M25, supporting the company’s continued growth.

Around the same time, Peter Terry stepped back from the day-to-day running of the business and passed the baton to the second generation of the family. His children continued to grow TSI while maintaining the values and customer relationships established by its founder.

In 2010, TSI began developing an idea for a new intelligent safe device.

That concept eventually became ProSync, described within the business as making a “six-sided metal box intelligent”. Its success demonstrated TSI’s ability to combine traditional physical security expertise with modern electronic technology.

ProSync also enabled TSI to develop managed security packages that brought several independent systems together, giving customers greater visibility and control across individual sites and wider company estates.

During this period, TSI continued to work with a diverse range of customers, from family-run bookmakers and luxury boutique jewellers to London embassies, offices and high-net-worth individuals.

The principle remained unchanged: understand the customer’s requirements and build the right protection around them, rather than forcing every customer into the same solution.

The security landscape continues to evolve, and so does TSI.

We have continued to invest in technology, develop new products and expand our capabilities. We gained BAFE accreditation, adding fire protection to our extensive portfolio and strengthening our ability to provide a broader range of protection from a single trusted partner.

ProSync has also undergone major development to respond to the challenges created by an increasingly cashless society.

Our approach remains rooted in the same values that shaped the company from the beginning: innovation, integrity, ingenuity and a commitment to finding the right solution for every customer.

TSI will continue to evolve as new technology, new ideas and the next generation of the family shape the business.

The opportunity to innovate will keep changing, but the values behind TSI will not. We will continue to listen first, solve problems, give the right advice and find better ways to protect people, property and assets.