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Threshold Security Systems

Threshold Security Systems

3.8(13 reviews)See reviews ↓·Portsmouth

What customers say

Based on genuine customer reviews

Reliability is the theme that recurs most often in accounts of Threshold Security Systems, and it cuts both ways. Positive reviewers describe a company that was professional, punctual and transparent, with work completed to an agreed estimate and at a quoted price. Several customers highlight the expertise on display, noting that the installer explained the required work before starting and listened carefully to individual requirements. The quality of the end result is also praised, with one business customer reporting that footage from a CCTV system installed by the company helped secure a conviction after a break-in.

Alongside this, a consistent body of complaints centres on Gavin, named repeatedly as the point of contact. Reviewers describe arranged appointments that were not attended, sometimes on multiple occasions, along with calls and emails that went unanswered. One account mentions a system left half installed and lacking backup support after software failed, requiring another firm to complete the work. Another describes a monitored GPRS connection that suffered persistent signal problems following installation. The pattern is of sound technical work undermined by poor follow-through and communication.

Burglar alarm shopHome automation companySecurity system installation serviceSecurity system supplier

Reviews

Reviews are taken from publicly available sources.

SF
Shaun Figg23 May 2025

My experience was the same as lots of the other reviews. Gavin failing to answer calls, emails and when you do eventually get hold of him and arrange an appointment, he just doesn't bother to show up. No apologies or anything. This happened 3 times. Complete time waster. Awful company. Don't waste your time with them. Read all the other reviews!

CL
Callum Long-Collins23 March 2024

Pretty awful service from Gavin all round. Threshold took over the servicing of our system and installed a monitored GPRS line. While installing the antenna it was clear the position was not suitable and would struggle to maintain signal but Gavin was adamant it was fine, more likely because it was right next to the box and easy to install. Ever since the GPRS installation we have had nothing but issues with constant connection issues and none stop communication failure notification phone calls at all hours night and day. Despite visiting since Gavin has continuously refused to address the issue and move the antenna. Recently we requested a service visit and to finally fix the antenna, an appointment was booked and missed with no explanation or communication, this was not the first time and would regularly happen with Gavin. We have since sent several emails and messages trying with no response. We have now lost patience and have gone elsewhere, if anyone is looking for a professional and timely company to work with we can highly recommend the Alarm People who came out the next day after making our initial enquiry.

DR
Diane Rice-Adams8 June 2023

Threshold supplied our alarm several years ago. We have never had any problems and the servicing keeps it up to date, functioning properly and gives me peace of mind. Very helpful and friendly company.

CN
Claire Newman14 March 2023

Gavin was very nice to deal with and was helpful when you could get hold of him, but numerous no-shows for arranged appointments, a system that was half installed, no back-up support for software that had crashed and a job half-finished not fit for use. Have since had to pay another company to come in to finish the job and put right various aspects of the work Threshold carried out. This was for a charity as well!

L
Leanne24 June 2022

Highly recommend this company competitive prices and top service.

SL
Sarah Lineham23 June 2022

Dont waste ypur time! Gavin came out & gave us a quote, then we made an appointment for the installation...& no one turned up. This happened two more times, even following a conversation with Gavin assuring us this would not happen again. We have since gone elsewhere & wouldn't recommend this company at all

TH
Timothy Haine19 May 2021

Security guarding in Portsmouth compared

Ordered by rating, weighted by the number of reviews — businesses with only a handful of reviews do not jump to the top automatically. 5 businesses in this category in Portsmouth are compared.

RankProviderRatingReviewsOpen Sat.
1GME SAFETY★ 5,054No
2Stag Security Services Ltd★ 4,715Yes
3S B Security Solutions Ltd★ 3,77No
4Vespasian Security★ 4,044No
5Threshold Security Systems (this page)★ 3,813No
Contact
+44333043410024 The Slipway, Portsmouth PO6 4TR
Working hours
Monday07:00–17:00
Tuesday07:00–17:00
Wednesday07:00–17:00
Thursday07:00–17:00
Friday07:00–17:00
SaturdayClosed
SundayClosed