High-Security Lock Cylinders

The average Euro profile cylinder can be snapped in seconds by burglars using simple household tools, and over 20 million uPVC and patio doors in the UK are at risk. These ranges of high security cylinders are designed to withstand attack. They are easy to fit in about 5 minutes – see our measuring and fitting guide and fitting videos.

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  • Mrs Jane Stringer, Jembir Estates Southampton, Hampshire

    Very pleasant engineers and very helpful. A pleasure to work with.

  • Mrs J Baldwin Portsmouth, Hampshire

    Service always top class, engineers polite and cheerful.

  • Mr A Price, Price Motors Waterlooville, Hampshire

    All people I encountered were a credit to CIA.

  • Mrs Bell Camberley, Surrey

    Had CIA at previous address and were so impressed with the level of service, we had one installed at our new address!

  • Mr I Dxxxxx Midhurst, West Sussex

    Good service, friendly staff.

  • Dr Dxxxxx Rowlands Castle, Hampshire

    When I need help it is available (with a smile, inferred by the telephone conversation!)

  • Roger Harvey Berkshire

    Customer service has always been good and a great deal of time and effort was put into sorting out the issues we had with the system when it was first installed.  We always found CIA to be a very reliable company and a company we would be more than happy to recommend.

  • Mrs G Richards Christchurch, Dorset

    Polite and efficient engineer who treated us and our home with respect.

  • Mrs Ann Nash Woking, Surrey

    When I ring I speak to a real person who takes time to find my details and so can speak to me as an individual.  This personal contact is invaluable.

  • Simon Bradley, Dynasystems Ltd Southampton, Hampshire

    Attentive and responsive. Got back to me with a quote in the time he said he would.