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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  • Mr D***** Hayling Island, Hampshire

    Very Polite, cleared up any mess he made. Hardly knew he was in the house.

  • 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.

  • Bourne IFA Alton, Hampshire

    Your technician provided a first class service and we would have no hesitation in recommending your company.  Excellent. Thank You.

  • Alan Sharp Reading, Berkshire

    Pleasant engineer who provided an efficient service.

  • Alan Jones – Newbury, Berkshire

    We always receive excellent service from CIA. We appreciated the text ‘reminder’ about the service appointment.

  • Southern Water Various locations throughout the South

    Thanks to the designer, project manager and all engineers whose work during this contract was carried out with efficiency, professionalism and care.

  • Mrs G Richards Christchurch, Dorset

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

  • Mr-P-Lxxxx-Guildford

    Work carried out as requested and staff incredibly helpful as always.

  • Mr Lockton – Rowlands Castle, Hampshire

    Prompt service, helpful technicians, no attempt to sell us a ‘modernised’ alarm system.

  • Mr R Clist Liss, Hampshire

    They were prompt in arriving.  They were able to overcome a small problem with little fuss, and seemed technically very capable.