Lock Repair & Replacement
Professional, non-destructive lock repair and replacement services.
Trusted MLA-qualified locksmiths with over 13 years of hands-on experience, repairing and replacing locking systems.


Non-destructive lock repairs & replacements
Fast, Secure, Lock Repairs & Replacement Solutions Near You
If your lock is jammed, sticking, or won’t turn smoothly, our expert locksmiths can repair it without damaging your property.
We specialise in restoring faulty locks using non-destructive techniques and manufacturer-approved tools.
Common lock issues we fix include:
- Jammed or seized locks
- Snapped keys and cylinder faults
- Misaligned or stiff uPVC locks
- Worn-out latch or gearbox mechanisms
Every repair is completed to a professional standard, ensuring your door is secure and functioning like new.
Lock Replacement warranties
When repair isn’t possible, we supply and fit high-security lock replacements, all backed by a 12-month parts and labour warranty and locks that meet the British Standard BS 3621 or higher.
Mortice and Euro cylinder locks
Expert repair and replacement of mortice and euro cylinder locks for homes and businesses.
We use only British Standard parts for reliable, insurance-approved security. All work is covered by our full warranty.uPVC and composite door locks
Specialists in repairing and replacing uPVC and composite door locks, including multipoint systems and gearboxes.
We restore smooth, secure function using quality parts. Fitted under warranty for lasting peace of mind.Patio, gate, and garage door locks
Comprehensive repair and replacement for patio, gate, and garage door locks of all types.
From seized mechanisms to lost keys, we provide durable, warrantied solutions to keep your property secure.
onsite
key cutting services
Trusted, Qualified, and Professional Key Cutting
To complement your lock repair or replacement, we provide on-site key cutting using high-grade blanks for precise, durable results.
Our mobile workshop allows us to complete the entire service on-site to ensure new keys work perfectly first time, saving you time, hassle and money.

Why Choose Us
Your Trusted, MLA-qualified Locksmith Professionals
With over 13 years of hands-on experience, Locks on Sea is a family-run locksmith service known for reliability, speed, and care. We’re fully licensed, insured, and available 24/7 to handle lockouts, repairs, upgrades, and security checks across homes, businesses, and vehicles.
Our focus is fast response times, fair pricing, and quality workmanship every single time.
- 13+ Year Experience
- Open 24 hours a Day
- Super Fast Arrvial
- Competetive Pricing
- Locally Owned & Operated
- Accepting Credit Cards
- Quick & Honest Service
- Satisfaction Guaranteed
Locations Served
Proudly serving Southend, Leigh-on-Sea, Rochford, and surrounding areas with rapid response times.
We’re fully licensed
Every locksmith is MLA certified, insured, and trained to meet the highest UK security standards.
Top Quallity products
Every locksmith is insured, and trained to use the best industry grade tools and equipment.
24/7 Support
Real people, real locksmiths always ready when you need us, day or night.
Need a local locksmith?
Fast. Local. Available 24/7 across Essex.
Trusted by Clients Across Essex
We’ve helped thousands of customers in Southend, Leigh-on-Sea, and beyond with 5-star reviews and fast, honest service.
Have a lock issue or need urgent help? Fill out the form and we’ll get back to you right away or call us now for immediate assistance.
A+
Proven Reviews
5.0
Google Reviews

What our clients say!
Lock repair & replacement fAQ's
If you need some quick assistance, here are a few common industry queries we get frequently asked.
Can a locksmith repair a lock without replacing it?
Yes, most damaged locks can be repaired non-destructively using professional locksmithing tools and techniques. Replacement is only needed if the lock is unsafe or beyond repair.
How long does a lock replacement take?
A standard door lock replacement typically takes 20-40 minutes, depending on the type and door condition.
Are your lock replacements covered by warranty?
Yes! Every new lock we install comes with a 12-month parts and labour warranty for complete peace of mind.
Can you cut new keys for my lock on-site?
Absolutely. We offer on-site key cutting for new and existing locks. Fully tested and in guaranteed working order before we leave.






































