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Security & Burglary Prevention in West London

Somesec Security Ltd has been safeguarding homes and businesses in West London for nearly 20 years. Our expert locksmiths offer free security surveys and advice for both residential and commercial clients. Whether you're enhancing security or recovering from a break-in, our team is here to assist with clarity and expertise.

Our friendly, knowledgeable and trustworthy master locksmiths can advise you on the best solutions to ensure the safety of your family and home. Get in touch with us to arrange your free security survey.

Door lock and key

Protect your property with confidence. From lock changes to CCTV installation, Somsec Security offers comprehensive security solutions for homes and businesses across West London and beyond. Take the first step towards peace of mind. Call us at 020 8993 5000 today.


No-obligation quotes and security surveys across West London

patio door with handle

Helping you protect your home and loved ones.

We supply a huge range of door & window locks, handles and hardware as well as uPVC window and door parts.

Call us to let us know what you're looking for. 

Whether you're looking for a simple little lock or something more specialised, Somsec Security can help.  We have access to a huge range of parts and products generally not available to the consumer.  

Our security services include

Our range includes:

  • British Standard Dead locks, Sash locks and Cylinders

  • 3-Lever Bedroom & Bathroom locks

  • Euro Profile, Oval and Rim Cylinders

  • High Security Restricted Section Cylinders

  • PadlocksHasp & staples and Pad-bolts

  • Timber, aluminium and UPVC window locks and handles

  • UPVC Window Handles, Espags and Friction Stays

  • Night Latches and Rim Locks

  • Multipoint Door Handles and Locking Mechanisms

  • If we don't have it, we will do our best to find it!

House door with keys in the door
Keys on a display wall

An efficient, friendly and trustworthy team. 
Just ask our customers! 

If you are just looking to upgrade you security or if you've been unfortunate enough to experience a break-in you should contact our team at Somsec Security for advice. Our experienced staff will answer your questions and clear all your doubts with respect to your options.  We provide our security services for both commercial and domestic premises.

Give us a call and we can arrange a free site survey of your premises. In addition to this, we also offer a free, no-obligation quote on your CCTV installation. You can also contact us if you need safes and locks for your home or workplace.


  • Key cutting including Yale, Brisant / Ultion & Mul-T-Lock 

  • Bespoke master key systems

  • Lock changes and upgrades

  • Lock repairs

  • Window and door repairs

  • Bespoke burglary prevention solutions

  • Security grilles, gates and shutters

  • Automatic gates and barriers

  • Fencing

  • Driveway security and bollards

  • Garage doors and security

  • CCTV & Access Controls installations

  • RING Doorbells

  • Proximity Fob Copying

Door Lock Cylinder


I am a director of a residents' association that looks after two blocks of flats in west London. The lock on one of our gates was superglued by a vandal, causing great inconvenience. We called Under Lock And Key, and they promptly sent round an experienced locksmith who was able to quickly replace the damaged parts and make the gate operational. The service we received was polite and efficient, and the cost was reasonable. I am therefore happy to recommend Under Lock And Key, and we will not hesitate to use them again if the need arises.



Key hanging from door lock
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