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 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.

  • Dr P Darling Basingstoke, Hampshire

    Have been with CIA for over 10 years now and they have never disappointed me.  The system designer showed a great deal of professionalism and expertise as well as being personable.

  • Mrs G Richards Christchurch, Dorset

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

  • Mr P Mxxxxx Titchfield, Hampshire

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

  • Mr *** Petersfield

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

  • Mr C Sxxxxxxxxx Fareham, Hampshire

    Very polite. Returned when he said he would as didn’t have enough batteries.

  • Ms J Sxxxx Portchester, Hampshire

    Any problems were sorted out. Very helpful, friendly technician who didn’t complain when my toddler wanted to help.

  • Mrs J Baldwin Portsmouth, Hampshire

    Service always top class, engineers polite and cheerful.

  • Mr M Sxxxxxxxxxxx Waterlooville, Hampshire

    Polite attitude of your technician, minimum disruption.

  • Martin Carter Clanfield, Hampshire

    Always get good service and prices are competitive. Re-arranging appointments is easy and technicians always turn up as arranged.