Lock On Security Logo

Lock On Security


Services and skills

  • Locksmith

    9 skills

    Digital Smart Door Lock Installation

    Doors Opened / Unlocked

    Emergency Locksmith Service

    Key Cutting

    Lock Fitting

    Lock Repair

    Security Door Locks

    Snap Locks

    Window Lock Fitting

  • Services

    6 services

    • Domestic Work
    • Commercial Work
    • Free Estimates
    • 24 Hour Call-out
    • Insurance Work Undertaken
    • Cards Accepted


Customer reviews

Overall ratingin last 12 months

9.88Write a review
  • Workmanship9.75 out of 10
  • Tidiness9.92 out of 10
  • Reliability9.92 out of 10
  • Courtesy9.92 out of 10
  • Quote Accuracy100 out of 100
Write a review

118 Total Reviews

The reviews below represent customers' views and not the views of Checkatrade

  • Stuck Window

    10Verified Review

    Chris was amazing - priced the job first, and did a really thorough job on a stuck locked window, making sure we'd be able to open it again afterwards. Really super grateful.

    Location: PO5
  • Seized-up lock to front door

    10Verified Review

    Arrived on time and sorted out the lock in no time at all. Explained what the problem was and what he had done to rectify. Very happy with service in every respect.

    Location: PO12
  • Change of locks

    10Verified Review

    The work was completed quickly and to the highest quality. Would highly recommend.

    Location: PO13
  • I needed a new lock for my front door

    10Verified Review

    Amazing, quick response to my quote request and was here first thing the following morning (it was gone 11pm when I made the request) new look fitted in less than 10 minutes. Highly recommend

    Location: PO11
  • Brilliant Work

    10Verified Review

    The gentleman arrived at the time he quoted, examined the door lock, replaced damaged part within the hour, and was very polite. Great work, highly recommend Lock-on Security

    Location: PO13
  • Changing locks

    10Verified Review

    Excellent service, prompt and reliable, would highly recommend

    Location: PO8

Company profile

  • OwnerMr Christopher Kerins
  • Member Since2019
  • Public Liability InsuranceSelf-Certified
  • AddressChecked
  • IdentityChecked
  • Checkatrade T&C'sSigned
  • VATNo
  • Company typeLtd Company

Company info

24 hour emergency locksmiths Portsmouth


With over 12 years’ experience as a commercial and domestic locksmith in and around Portsmouth, with over 170 5-star reviews on Google and Facebook, you can count on Lock-on Security, your Portsmouth locksmith for all your 24/7 emergency needs at a very competitive price.


Locked out of your house? Lost keys? Broken key/lock? We know how stressful it can be to find yourself in an emergency situation. At Lock-on Security, we offer 24 hour emergency locksmith services in Portsmouth and surrounding areas.


Broken door lock? Need to replace the locks in your home? With the help of a professional locksmith in Portsmouth, we can repair or replace locks that might be broken or damaged. Don’t leave your home security to chance.


Broken window/handles in Portsmouth? Lock-on Security can help make sure your property remains safe and secure. We offer quick and reliable boarding up in Portsmouth for commercial and domestic customers, 24 hours a day.


We are proud to have earned the trust of our locksmith customers in Portsmouth, serving our local community for over 12+ years. Our locksmith services in Portsmouth offer quality workmanship including: lock installation, lock repairs, lock replacements, 24 hour emergency locksmith services, and professional advice for all types of locksmith service needs in Portsmouth.

  • Insurance approved locks
  • Entry gaining
  • Warrant work
  • Evictions
  • Re-securing
  • Post burglary repairs
  • uPVC door locks
  • Wooden door locks
  • Yale locks
  • Night latches
  • Digital door locks
  • Fire escape hardware
  • Panic hardware
  • CCTV installation
  • Burglar alarm installation
  • Window boarding
  • uPVC window repairs
  • uPVC door repairs


Lock-on Security services are provided directly by Chris, owner of the company and professional locksmith in Portsmouth with over a decade of experience.

We guarantee first class service for every customer and provide a friendly, trustworthy and efficient experience with every locksmith job.

All of our locks conform to British Standards with lock repairs, lock replacements and lock installations completed as efficiently and securely as possible.

Our fitted-out van allows us to offer a completely mobile 24 hour locksmith service, with all the tools needed to undertake all tasks from key cutting to car unlocking.

Take a look at our most frequently asked questions here.

Still need answers? Call Chris anytime for expert help and advice.


The exact price charged by us and other locksmiths depends on the job you need us to do. Lock-on Security doesn’t charge a callout fee, no matter the time – day or night. With no call out charges, you only pay for labour and any materials required to secure your property. Remember, we offer a 100% free, no obligation quote over the phone or in person. Give Chris a call to discuss your exact requirements now or fill in the contact form.


We’re not tied to a shop. As a mobile locksmith in Portsmouth, we come to you. When it comes to getting a reliable locksmith service in Portsmouth, you need a local locksmith service that is available around the clock. Our fitted-out van is packed full of the equipment we need to complete any locksmith job throughout Portsmouth and surrounding areas.

Here’s just a few of the main locations we serve in the county – there’s far too many to list them all!


A modern and dynamic centre attracting visitors and investment. It is a port city and naval base on England’s south coast.

Av. callout time: 30 mins


Thriving market town between the cities of Chichester and Portsmouth, characterised by fine Georgian buildings.

Av. callout time: 30 mins

Hayling Island

Originally dependent on fishing, farming and salt production. Now known for its Funland amusement park and holiday centres.

Av. callout time: 40 mins


A large, important port and thriving city in Hampshire, with the longest surviving stretch of medieval walls in England.

Av. callout time: 40-50 mins


Historical small Saxon town in Hampshire on the south coast of England, near the border of West Sussex.


Contact details