Locker Lock Replacement Guide UK: How to Replace Locker Locks

Locker lock replacement is often needed when keys are lost, locks are damaged, users change, lock barrels wear out or a site wants to upgrade from keyed locks to combination, coin-operated or electronic locker locks. The right replacement depends on the existing locker door, lock footprint, fixing style, cam type and how the lockers are managed day to day.

This guide explains how to replace locker locks in UK workplaces, schools, gyms, leisure centres, factories, warehouses and staff changing rooms. It covers replacement keyed locks, combination locks, coin locks, electronic locks, padlock fittings, master keys, lock compatibility and when to repair, replace or upgrade.

Quick answer: To replace a locker lock, identify the current lock type, measure the lock body and fixing hole, check the cam position, confirm whether a master key is needed, then choose a compatible replacement lock or upgrade option.

For broader lock advice, see our Locker Locks UK master hub, compare keyed vs combination locker locks or view our locker lock range.

When should locker locks be replaced?

Locker locks should be replaced when they no longer operate reliably, when access control has been compromised or when the existing lock no longer suits the way the lockers are used.

Common reasons include:

• Lost locker keys
• Broken keys inside locks
• Damaged lock barrels
• Worn cams or fixing nuts
• Locks spinning in the door
• Staff or student turnover
• Vandalism or attempted forced entry
• Changing from keyed to keyless access
• Upgrading old lockers during refurbishment

If lost keys are the main issue, read our How to Stop Lost Locker Keys guide.

Main locker lock replacement options

Replacement Option	Best For	Main Benefit
Like-for-like keyed lock	Assigned staff or school lockers	Simple replacement
Combination lock upgrade	Reducing lost key issues	No physical keys
Coin-operated lock	Gyms and leisure centres	Improves locker turnover
Electronic locker lock	Modern shared-use lockers	Flexible access control
Padlock fitting	Budget or industrial sites	Low-cost flexible access

Step 1: Identify the existing locker lock type

Start by identifying the lock currently fitted to the locker door.

• Keyed cam lock → opened with a small locker key.
• Combination lock → opened with a dial or code.
• Coin lock → uses a coin or token before locking.
• Electronic lock → uses PIN, RFID, card, fob or digital access.
• Padlock hasp → uses a separate user-supplied padlock.

For lock type comparisons, see our Mechanical vs Electronic Locker Locks guide.

Step 2: Check the lock footprint and fixing hole

Locker locks are not always universal. Before ordering replacements, check how the lock fits through the locker door.

Important details include:

• Lock body size
• Door hole size
• Fixing nut or fixing screw position
• Lock face shape
• Door thickness
• Recessed or flush fitting

A replacement lock should cover the existing hole cleanly and operate without interfering with the locker door, frame or neighbouring lockers.

Step 3: Check the cam and locking direction

The cam is the metal arm on the back of the lock that secures the locker door. It must match the door design and locking position.

Check:

• Cam length
• Cam bend or offset
• Cam rotation direction
• Locked and unlocked positions
• Whether the door is right-hand or left-hand hinged
• Whether the cam catches behind the frame correctly

If the cam is wrong, the lock may fit the door but fail to secure the locker properly.

Step 4: Decide whether to keep keys or upgrade

A replacement job is a good time to decide whether the current lock system still suits the site.

Choose a like-for-like keyed replacement if you need:

• Simple assigned staff lockers
• Low-cost lock replacement
• Easy user operation
• Existing master key compatibility

Consider upgrading if you need:

• Fewer lost key problems
• Shared-use lockers
• Higher locker turnover
• Better access management
• Reduced administration

For upgrade guidance, compare keyed vs combination locker locks and shared-use vs assigned-use locker systems.

Replacing keyed locker locks

Keyed locker locks are usually the simplest to replace if the new lock matches the existing footprint and cam arrangement.

Before replacing keyed locks, confirm:

• Key number or lock series
• Whether locks need to be keyed alike or keyed differently
• Whether a master key is required
• Cam length and fixing style
• Door thickness and lock hole size

If only the key is missing, you may not need a full lock replacement. A replacement key may solve the problem more cheaply.

See our Keyed Locker Locks UK guide and replacement locker keys service.

Replacing combination locker locks

Combination locker locks are commonly replaced when the mechanism wears, the code cannot be reset or the lock has been damaged.

Check whether the replacement lock supports:

• Private-use mode
• Public-use mode
• Master override
• Code reset
• The same fixing footprint

Combination locks are a strong upgrade where lost keys are a recurring issue.

Read our Locker Combination Locks UK guide.

Replacing coin-operated locker locks

Coin-operated locker locks are usually replaced when the mechanism jams, the coin unit wears, tokens change or the site wants to move between coin return and coin retain operation.

Before replacing coin locks, check:

• Coin or token size
• Coin return or coin retain function
• Door cut-out size
• Master key access
• Handing and cam position
• Whether the locker is used in wet or dry areas

For leisure sites, coin locks can help improve locker turnover and reduce abandoned use.

See our Coin-Operated Locker Locks UK guide.

Replacing electronic locker locks

Electronic locker locks may need replacing when keypads fail, battery compartments are damaged, firmware is outdated or access requirements change.

Before replacing electronic locks, confirm:

• Power type and battery access
• PIN, RFID, card or fob compatibility
• Public-use or private-use mode
• Management software requirements
• Emergency override method
• Door preparation and lock footprint

Electronic systems are especially useful for high-turnover and shared-use locker environments.

Read our Electronic Locker Locks UK guide and Managing Locker Access in High-Turnover Environments.

Replacing padlock fittings

Padlock fittings may need replacement if the hasp is bent, the staple is worn, fixings are loose or users have damaged the fitting with oversized padlocks.

Check:

• Hasp plate size
• Fixing hole positions
• Staple clearance
• Padlock shackle compatibility
• Door alignment
• Whether the replacement covers old fixing marks

Read our Padlock Fittings for Lockers UK guide and Padlocks vs Built-In Locker Locks.

Can existing lockers be upgraded to a different lock type?

Many lockers can be upgraded to a different lock type, but compatibility depends on the door preparation, lock cut-out and cam position.

Common upgrades include:

• Keyed locks to combination locks
• Keyed locks to electronic locks
• Padlock fittings to built-in locks
• Coin locks to coin return or coin retain alternatives
• Older locks to master-keyed replacements

Upgrading is usually most worthwhile when the current lock system creates recurring administration, security or maintenance problems.

Locker lock replacement checklist

• Identify the existing lock type
• Measure the lock body and door cut-out
• Check the cam length and offset
• Confirm handing and rotation direction
• Check door thickness
• Decide whether master key access is needed
• Decide whether to replace like-for-like or upgrade
• Check compatibility before ordering multiple locks
• Test one replacement before rolling out across a full site

Best replacement lock by environment

Environment	Best Replacement Option
Schools	Combination or keyed replacement locks
Workplaces	Keyed, combination or electronic locks
Gyms	Coin-operated or electronic locks
Swimming pools	Coin return or corrosion-resistant locks
Factories and warehouses	Keyed, combination or padlock fittings
Hybrid offices	Electronic shared-use locker locks

Related locker lock guides

• Locker Locks UK master hub
• Keyed locker locks UK
• Locker combination locks UK
• Coin-operated locker locks UK
• Electronic locker locks UK
• Padlock fittings for lockers UK
• How to stop lost locker keys
• Locker locks product range

Frequently Asked Questions

Can locker locks be replaced?

Yes. Most locker locks can be replaced if the new lock matches the existing door cut-out, fixing method and cam position.

Do I need to replace the whole locker if the lock breaks?

No. In most cases, only the locker lock or lock barrel needs replacing. The whole locker usually only needs replacement if the door or frame is badly damaged.

Can I replace a keyed locker lock with a combination lock?

Often, yes. Many keyed locker locks can be upgraded to combination locks, but the door cut-out, fixing style and cam position must be checked first.

Can I get a replacement locker key instead of replacing the lock?

Yes. If the lock is still working and the key number is known, a replacement locker key may be cheaper than replacing the full lock.

What is the cam on a locker lock?

The cam is the metal arm on the back of the locker lock that turns behind the frame to secure the door closed.

Are locker locks universal?

No. Locker locks vary by footprint, fixing style, cam length, rotation direction and door preparation, so compatibility should always be checked before ordering replacements.

Can electronic locker locks be fitted to existing lockers?

Many existing lockers can be upgraded with electronic locks, depending on door thickness, cut-out size, wiring requirements and lock footprint.

When should locker locks be upgraded instead of replaced like-for-like?

Locker locks should be upgraded when the existing system creates repeated lost key problems, poor locker turnover, high administration or weak access control.