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 P Mxxxxx Fareham, Hampshire

    All CIA staff seem to be friendly and keen to provide a good service.

  • Chris Holliday Guildford, Surrey

    Your technician was exceptionally pleasant and helpful – a credit to your company

  • Roger Garth Hutton Farnham, Surrey

    Prompt, efficient service. Courteous and efficient technician.

  • Alan Jones – Newbury, Berkshire

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

  • Mrs ****** Chichester, West Sussex

    Recommended by a family member so have not had anyone else to quote.  Hard reputation to follow!

  • Mr Johnstone, Priory School Southsea, Hampshire

    Another great job – Many thanks.

  • 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.

  • Dr Dxxxxx Rowlands Castle, Hampshire

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

  • Mr-P-Lxxxx-Guildford

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

  • Mrs Wxxxxxxxx Locks Heath, Hampshire

    Very happy with the work. Engineer is a credit to your company. My son is also looking to have an alarm fitted, and would like him to do that as well.