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.

  • Mrs N H***** Bournemouth, Dorset

    Engineer arrived on time and was very friendly, willing to take on board our comments regarding box location from the moment he arrived – He went through the system and demonstrated it several times.  He was thorough in his testing.  He took extra care to hide the cabling, swept up and even offered to vacuum!

  • 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 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.

  • Andrew Smith & Son Alresford, Hampshire

    Very neat, tidy and invisible – we hardly knew they were here. Very impressed.

  • Ricara Ltd Brighton

    Always helpful, always proficient, efficient and effective.

  • Mr P Mxxxxx Titchfield, Hampshire

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

  • Roger Harvey Berkshire

    Customer service has always been good and a great deal of time and effort was put into sorting out the issues we had with the system when it was first installed.  We always found CIA to be a very reliable company and a company we would be more than happy to recommend.

  • Mr A***** Clanfield, Hampshire

    Local company with a good reputation and we have been very impressed so far – thank you.

  • Mr & Mrs Hxxx Rowlands Castle, Hampshire

    The service has always been excellent.