If your uPVC door lock has become worn, you've lost your keys, or you simply want to improve your home's security, replacing the lock cylinder is one of the quickest and most cost-effective upgrades you can make.

Across the UK in 2026, prices vary depending on the type of cylinder fitted, the locksmith you choose, and whether the work is carried out during normal working hours or as an emergency.

Our Fixed Prices

At A.L.S. Locksmiths, we keep things simple.

All prices include:

• Supply and fitting
• Professional installation
• Lock testing
• No call-out charge
• No VAT
• Fixed prices with no hidden extras

Standard Euro Cylinder

Supplied and fitted from £90

Ideal for replacing worn or faulty standard cylinders.

Snap Safe 1 Star Euro Cylinder

Supplied and fitted from £110

Provides improved protection against lock snapping and is suitable for many uPVC and composite doors.

Snap Safe 3 Star Euro Cylinder

Supplied and fitted from £130

Our highest level of cylinder security, offering enhanced protection against lock snapping, drilling, picking and other common attack methods.

Which Lock Should You Choose?

Standard Euro Cylinder (£90)

Suitable if:

• Your existing cylinder has failed.
• You're replacing a worn lock.
• You want a straightforward replacement.

1 Star Snap Safe Cylinder (£110)

A good choice if:

• You're upgrading security.
• Your current cylinder offers little resistance to lock snapping.
• You want better protection without replacing other hardware.

3 Star Snap Safe Cylinder (£130)

Recommended if:

• You want the highest level of cylinder protection.
• You're replacing an older cylinder.
• Home security is your priority.

Why Choose a Family-Run Locksmith?

As a family-run business, we believe in honest advice and straightforward pricing.

That means:

• Fixed prices
• No hidden charges
• No VAT
• No unnecessary work
• Quality parts supplied and fitted
• Friendly, personal service

If your lock doesn't need replacing, we'll tell you. If a simple repair will solve the problem, we'll recommend that instead.

More Than Just Replacing the Lock

Sometimes a stiff key or difficult lock isn't caused by the cylinder at all.

It could be:

• A dropped door
• A worn gearbox
• A failing multipoint locking mechanism
• Poor door alignment

Before replacing any parts, it's important to identify the actual cause of the problem. This ensures you're only paying for the repair you need.

Quality Parts, Fixed Prices

Replacing a uPVC door lock doesn't have to be expensive or complicated. Whether you need a standard replacement cylinder or want to upgrade to a high-security Snap Safe lock, we offer clear, fixed prices with supply and fitting included. No hourly rates, no call-out charges, and no VAT—just honest advice from a local family-run locksmith.