Lock On Security Logo

Lock On Security

+Approved member since 2019

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

10Write a review
  • Workmanship10 out of 10
  • Tidiness10 out of 10
  • Reliability10 out of 10
  • Courtesy10 out of 10
Write a review

127 Total Reviews

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

  • Lock fixed

    10Verified Review

    Came on time, checked what was wrong with the door acquired the part that was broken replaced and now my door is secure gentleman that did it was very polite, left no mess very happy with the standard of the work

    Location: PO3
  • New lock fitted

    10Verified Review

    Chris was excellent - great communication and great advice, followed up by good workmanship at an exceptionally good price. Highly recommend.

    Location: PO5
  • Opening door

    10Verified Review

    Immediate response upon requesting assistance to get back into my house after forgetting my key. Arrived swiftly even considering school rush and quickly and efficiently opened up the door in seconds. Friendly and professional service, may thanks! Ash

    Location: PO2
  • New lock fitting

    10Verified Review

    Chris was absolutely fantastic!! He worked around my schedule and arrived just a couple of hours after arranging the work to be done. He promptly completed the job and could not have been more pleasant. Impeccably priced too. I was expecting to pay a lot more for not only the job but such a quick turnaround. Absolutely outstanding service!! I cannot recommend Lock-on Security enough.

    Location: PO3
  • Repair and replace multi lock on patio doors

    10Verified Review

    Turned up as promised and curried out the work professionally. Cost was far better than some companies who quote £145 just to turn up

    Location: PO14
  • Moved in to new house and needed locks changed

    10Verified Review

    Timely response to messages. Very friendly. Efficient and tidy service. Would highly recommend.

    Location: PO2

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