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Calder Security Calder Security is Yorkshire's leading independent security company, offering a range of security services for homes and businesses. Established in 1976, our expertise is only matched by our friendly and responsive customer service. We are a growing, company offering friendly, personal service with capability across a diverse range of security solutions.

All our engineers are employed directly which means that we can guarantee their professionalism, knowledge and experience and that they meet our high expectations in terms of the service they give you.
Services
Calder Security was founded in 1976 as a lock and safe business, serving the domestic market. It grew reasonably steadily over the years but remained a small business, continuing to focus on the home market. Meanwhile Simon Cook was embarking on his career as an electrical engineer.
Thank you for coming out to sort the alarm. Can I just say the gentleman that came was very pleasant and professional. He also warned us when the alarm was going to go off which was nice as I have small children. I just wanted to thank you all for the very efficient service I received from my first telephone call yesterday morning to the engineer's visit today and the emailed report and invoice. I look forward to doing further business with you in future years. Thank you Calder Security for a fabulous service yesterday at my dance school.
Nigel and Debra knew they wanted an MLA registered locksmith to upgrade their locks and found us via their website. Gordon turned to us to service a business fire alarm after a bad experience with a large national company. Following this experience he has continued to use us for his home security needs.
Here you will find some of the most common questions we get asked. If you can't find what you're looking for here the feel free to call us on 0800 612 9799 (free from a landline) or 0345 833 5543 (landline rate from a mobile) or contact us via our enquiry form. Statistically speaking, 1 in 11 houses burgled will be burgled again within a 6 year period.
Reviews (15)
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Sean Craven
Apr 13, 2022
Great service and helpful, friendly staff. My go to place for anything lock or security related.
Dan Russell
Apr 05, 2022
Very impressed with their services. I've used them for a home alarm service, and a car key replacement, and couldn't be happier. Very competitive prices too!
Michael Morgan
Aug 22, 2021
Arrived bang on time, worked quickly and carefully to remove an old alarm panel and deactivate. Polite, well presented and well-mannered. The engineer was a credit to your company, and the whole process from initial query to completion was a doddle. If only more local contractors were as focussed. Would recommend to anyone. 5 stars.
Cheryl Lloyd
May 24, 2021
Had Calder come out and install a CCTV system for my house and the service was excellent from start to finish. The install lads were really friendly and cleaned up after themselves and even though Im not technically minded they helped me through the set up on my phone to view my cctv on the app. I would highly recommend Calder Security and will be using them again.
Catherine Burt
Apr 28, 2021
Excellent service, just moved house, found out the alarm wasn't working. Called Calder for a quote on a new alarm, the receptionist said it is probably just a service it needs, someone will be with you today at 2pm. The engineer was here at 1.30pm. I now have a working alarm. Definately recommend Calder Security
Lynne Law
Apr 05, 2021
Security alarm annual service. Efficient and friendly service from start to finish. Chris, Office Manager demonstrated fantastic customer service skills very well organised and amiable when booking our appointment. Luke, engineer followed all covid measures to keep us safe and carried out the work proficiently. I would highly recommend this company.
Oliver N.
Mar 07, 2021
Fantastic service. The team were extremely helpful on the phone prior to the visit. The engineer who visited (Luke) was professional, prompt and took the time to go through everything. Even the cat liked him! I will certainly be recommending this company in the future.
Karen Horsfall
Apr 25, 2020
Calder Security is very organised, well priced and very quick at making sure they fit in with what the customer wants. Every year they phone me up about a month before, to remind me that our alarm is due for a service. I would particularly like to say a big thank you to the engineer, Chris Lavell, who I know is very knowledgeable and patiently explains how the alarm works and will explain more than once in terms that you understand. If you want efficiency and knowledge, I would not hesitate to recommend Calder Security. Their knowledge and service is second to none.
James Bolton
Mar 01, 2020
Requested a quote for a CCTV and monitored alarm system for my small business. Quote received the same day and work don't the following week. The engineers were both polite and efficient, they wore shoe covers and even vacuumed up any mess with their own hoover! Extremely professional and great quality cameras, very pleased with the service and the quality. Can't recommend enough! Thank you.
Sharon Stead
Oct 29, 2019
We had Calder Security fit CCTV cameras to our house, Andy, the engineer was first class, realy professional and very polite, he explained how the system worked in 'layman' terms for us so we could understand. We had to call back for an adjustment on one of the cameras and they came out really quickly, . Could not recommend highly enough, first class service. Thank you all.
Stephanie H.
Oct 25, 2019
Fantastic service from start to finish. Engineer really helpful answered all my questions, would use calder Security in the future.
Mark Boyd
Sep 22, 2019
I've used Calder security Ltd for over 7 years now supplying alarms, safes and CCTV to over 400 stores around the uk.
Simon and his team always go the extra mile to help support myself and the stores.
5 star service
Helen Cook Hults
Jun 07, 2017
The after installation service and care is excellent. The engineers are polite, knowledgeable and efficient.
Matt Brackley
Jan 04, 2017
Extremely useful visit to a new home with existing alarm (and clueless owner). Showed me how to work it, reset the entry and exit times and zones to suit me, explained wiring and alarm history and now I have someone to call if I have a problem. Extremely fast response despite festive period and friendly and careful engineer. Definitely recommend.
Najeeb Muhammad Baig
Dec 01, 2016
Great service... took my locker down the stairs without causing any issues to the surrounding... wold definitely recommend them.