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 Johnstone, Priory School Southsea, Hampshire

    Another great job – Many thanks.

  • Mr & Mrs S Sxxxxx Woking, Surrey

    The engineers were excellent, hard-working, efficient and pleasant, and did a great job. They explained everything thoroughly. They were tidy and left the house as they found it.

  • Mr T xxxxxxx Portsmouth, Hampshire

    The service we receive is excellent and always has been.

  • Chris Holliday Guildford, Surrey

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

  • Paul Moody Chichester, West Sussex

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

  • Alan Sharp Reading, Berkshire

    Pleasant engineer who provided an efficient service.

  • Ms J Sxxxx Portchester, Hampshire

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

  • 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.

  • Mr Bxxxxx Portchester, Hampshire

    CIA is always there when you need them.

  • Mr-P-Lxxxx-Guildford

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