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    The Full Solution From One Company

    Innovative Security for Your Needs

    We’re always ready for our next security challenge so call us now - 03331 889 977

    Why TSI?

    We’re not like other security firms, at heart we’re a family business and always have been. This is why we’re different. We have a longstanding reputation for developing unique solutions to complex problems – delivering cutting edge technology  alongside personalised support.

    Whether we’re giving you considered recommendations during an on-site survey or providing dedicated systems support, you’ll always receive the personal touch whichever member of our team you speak to. Which is why we’ve built long term relationships with some of the biggest names in a variety of businesses.

    So much more than a safe

    So much more than a safe


    TSI's game changing technology revolutionises your traditional safe

    Physical Protection

    Bespoke high security doors that blend into the environment; discrete secure rooms and seamless security glazing


    Not just a box ticking exercise - we'll ensure every angle is covered

    Fire Alarms

    Protecting property and life, your bespoke alarm systems is designed to the highest industry standards

    Security Glazing

    Create an visible impression and allow your collection to be viewed whilst providing discreet physical protection


    Beautiful to behold, easy to secure with ProSync


    We are here to offer service and support all day, all night and all year


    Cloud based systems for improved access and security


    NSI Gold Approved our systems are specifically designed to suit your individual circumstances


    A family run and owned business across three generations, security is in our DNA

    Alerts & Reports

    Proactive, real time monitoring and alerts to help you manage your estate

    Jewellery & Watches

    Keeping your valuables safe and secure

    Store Room

    Make your stock or store room secure and control access


    Keeping your valuable wines safe, secure and monitor temperature using ProSync technology

    Safes & Vaults

    All sizes and all grades available, whatever your insurance needs

    Security Doors & Panic Rooms

    Elegant but with security at the forefront and designed to blend in with existing decor

    Access Control

    Allowing you to manage and control who can enter your property

    About us

    TSI – Total Security Installations – has been providing ground breaking security solutions for generations. Initially a safes and vaults specialist, operating out of a drafty shed on the banks of the Thames, the company has grown to be one of the most well-respected security providers in the UK. Ever since our founder and chairman, Peter Terry, invented the Terry anti hold-up safe back in 1972 we have developed a reputation for forward-thinking security solutions. Today, the safe is still approved by insurers and used to protect cash and staff across the world. As customer needs have evolved, so have we.

    We are constantly developing cutting edge physical, electrical and digital security solutions to the latest security threats. Despite our continued growth we have rigidly maintained our commitment to high-quality service, based on good old-fashioned family and business values.  Which is why TSI has an enviable reputation for innovative, bespoke engineered solutions.

    • 1968-1980

      The beginnings - from Dockside to Docklands. Peter Terry started his safe business from a floating pontoon in Woolwich. He quickly combined his safe expertise with a knowledge of the Thames tides, as pushing a safe uphill was no fun. His brother joined him, and the business grew rapidly. Peter fast gained a reputation for problem solving, which culminated in a bookmaker asking him for help in solving a hold up problem that was rife in the industry. By combining the idea of a central heating clock with a solenoid, he invented the Terry anti-hold up safe. Losses were reduced dramatically and soon the unit was being installed in bookmakers and quick serve restaurants around the country. The company then moved to a business unit on the India and Millwall Docks.

    • The 80's

      Terry`s reputation continued to build and was now diversifying into ballistic glass screens and doors. This proved popular in the embassy, banks and jewellery fields where there was a need. There was even an appearance on Tomorrow`s World! The business expanded and in November 1985 was presented with a Docklands development award by the then Chancellor of the Exchequer Nigel Lawson. Ironically the following day they received notice that the property was to be subject of a compulsory purchase for the development of Canary Wharf. So the business was forced to relocate to Canning Town.

    • 1990's

      Lets get electrical. Until the late 1980`s the business provided mainly physical security solutions, dealing predominantly in safes and doors. In the mid 90`s Peter was approached by one of his bookmaker clients and asked whether the firm could provide their alarms and CCTV. They were happy with the service TSI offered and wanted the company to do more for them. TSI gained accreditation with the NSCIA security association, as it then was, for the installation of Intruder Alarms. This enabled the business to be able to offer a full package of services to its` clients from a single provider.

    • 2005 to 2019

      Moving out and ProSync. In 2005, TSI decided to move from Canning Town to its current location in Purfleet. The unit was well located for the M25 and modern in design. Peter decided to step down from the day to day running of the business and passed the baton onto his sons Peter and Paul. TSI continued to live up to their reputation as problem solvers and in 2010 started working on an idea for a new intelligent safe device. This idea eventually became known as ProSync and to quote a well-known member of our team `made a six-sided metal box intelligent` This was and continues to be a great success. Combined with our electrical capability, ProSync allowed us to develop a managed package of services integrating several independent systems. This enabled us to increase the security and knowledge of what was happening across an entire site or company estate.

    • 2020 and beyond

      Perpetual innovation. At TSI we know that the world continues to evolve and that we adapt to stay relevant. We gained BAFE accreditation, adding fire to our extensive portfolio. New products are in the pipeline and ProSync has undergone a major revamp to adapt to the challenges that a cashless society brings. Values from the past are still as important today, the need to build and maintain relationships and the conviction to offer the best solution for the client will always be part of our DNA.

    One to watch

    Main Video

    ProSync Launch

    The TSI Blog

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    Ladies Day at Epsom Racecourse 2024

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    How TSI Entered The World of Fire.

    How TSI Entered The World of Fire.

    Who doesn’t understand the importance of Fire System Services these days? Here at TSI we gained BAFE accreditation, adding fire to our extensive portfolio in 2022.We are proud to be…

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    Sleek Security. Innovating High-Security Doors from the inside out.

    Sleek Security. Innovating High-Security Doors from the inside out.

    Everywhere you look, the world is evolving. Our industry is no different.When you think of traditional security doors, you think of bulky steel unsightly industrial looking barriers that detract from…

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