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 L********* Rowlands Castle, Hampshire

    CIA are easy to contact and their staff are helpful.

  • Mr P A Forbes Portsmouth, Hampshire

    Nice young man, very polite and very helpful, also very tidy worker.

  • 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.  […]

  • Mr I Dxxxxx Midhurst, West Sussex

    Good service, friendly staff.

  • Mrs S******** Fareham, Hampshire

    Always very helpful and obliging.  Always feel that things said will happen.

  • Mr *** Petersfield

    Very neat and tidy installation.  Very considerate with young family.  Professional and efficient service throughout the whole process.

  • Paul Moody Chichester, West Sussex

    Both the system designer and the install team were excellent. I am really pleased with the end result.

  • Mr & Mrs Hxxx Rowlands Castle, Hampshire

    The service has always been excellent.

  • Alan Jones – Newbury, Berkshire

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

  • Mr T xxxxxxx Portsmouth, Hampshire

    The service we receive is excellent and always has been.