How to Find Your Locker Key Code: UK Step-by-Step Guide

If you need a replacement locker key, the most important information is normally the locker key code or key number. Identifying the correct number can allow a replacement key to be supplied without removing or changing an otherwise serviceable locker lock.

The code may be stamped or engraved on the original key, marked on the front of the lock, recorded in a site key register or, in some cases, found on the lock body. Locker numbers, asset numbers and key numbers are not automatically the same thing, so the number must be identified correctly before ordering.

This guide explains how to find locker key numbers used on UK lockers, how to distinguish the locker number from the actual key code, how Lowe & Fletcher, Ojmar, ASSA and other manufacturer key systems differ, and when to order a replacement key rather than change the complete locker lock.

If you already know the manufacturer and complete key code, go directly to our replacement locker key service. If you know the code and want more detail about the replacement process, see Replacement Locker Keys by Code UK.

If the key, lock or manufacturer cannot be identified, use our locker key, lock and part identification service.

Quick Answer: Where Is the Locker Key Code?

Check these locations in order:

1. The original key: inspect both sides of the key head for a stamped, engraved or printed number.
2. The front of the lock: look above, below and around the keyway or cylinder face.
3. A matching spare key: another key for the same lock may carry a clearer number.
4. Your site records: check locker schedules, key registers, maintenance records and previous orders.
5. The manufacturer: identify the locker or lock brand so the number can be matched to the correct key series.
6. The lock body: some additional information may be visible on the rear of the lock after authorised access.

Do not assume that the number displayed on the locker door is the key code. Locker 125 may use a completely different replacement key number.

What Is a Locker Key Code?

A locker key code is a number or alphanumeric reference associated with the key-cutting pattern used by a particular lock series. Where the correct manufacturer and code are known, a suitable replacement key can often be produced without copying the original physical key.

Depending on the manufacturer and lock system, the code may contain:

• numbers only;
• letters followed by numbers;
• a manufacturer-specific prefix;
• leading zeroes;
• or a number belonging to a defined key-code range.

The code should be considered together with the manufacturer or key series. Similar-looking numbers can occur within completely different lock systems.

Locker Number, Key Number and Lock Code

Several different numbers may appear around a locker installation. Confusing them is one of the most common causes of incorrect replacement-key orders.

Number or reference	What it identifies	Normally usable for ordering?
Locker number	The physical locker or compartment	Only where site records connect it to the actual key code
Key number	The replacement-key reference within a particular series	Usually, when manufacturer or series is known
Lock code	The code associated with the fitted lock	Often
Asset number	The organisation’s internal equipment reference	Normally no
Master-key reference	A master, sub-master or override system	Not for an ordinary user-key order

A good locker key register connects the locker number, key code, lock manufacturer and physical location. This allows future replacement keys to be ordered without treating the door number as the cutting reference.

Step 1: Check the Original Locker Key

If an original or spare key is available, start by inspecting both sides of the key head.

• stamped numbers;
• engraved numbers;
• printed codes;
• letter-and-number combinations;
• manufacturer names;
• manufacturer logos;
• and any prefix or suffix.

Clean dirt from the key carefully if necessary, but do not guess a worn character. One incorrect digit or missing prefix can identify a completely different replacement key.

Step 2: Inspect the Locker Lock Face

If the original key has been lost, examine the visible face of the locker lock.

• look above and below the key slot;
• look around the cylinder face;
• check beside any manufacturer logo;
• check around the outside of the barrel;
• and take a clear close-up photograph of faint markings.

Many keyed locker locks display a number on the visible face, making replacement possible even when the original key has disappeared.

Step 3: Identify the Locker Lock Manufacturer

Locker keys are not universal. Identifying the manufacturer helps determine which key profile and code range the number belongs to.

Brands commonly encountered in UK locker installations include:

• Lowe & Fletcher (L&F);
• Ojmar;
• ASSA;
• Ronis;
• Probe;
• Helmsman;
• Pure;
• Link;
• Garran;
• QMP;
• and other specialist locker-lock systems.

Look for branding on the key, lock face, barrel, rear lock body, locker label, original documentation or previous replacement-key orders.

If the manufacturer is known, use our locker keys by brand page to find the appropriate replacement range.

Lowe & Fletcher Locker Key Numbers

Lowe & Fletcher, often abbreviated to L&F, manufactures lock systems widely used on lockers, cabinets and commercial storage equipment.

L&F locker keys commonly belong to defined code ranges. The correct number is more important than the general appearance of the key because visually similar keys can use different cutting patterns or profiles.

• Record the complete number exactly as shown.
• Check whether the code appears on the key or lock face.
• Confirm that the fitted lock is actually an L&F product.
• Check the correct code range before ordering.
• Do not assume two similar L&F keys are interchangeable.

See our Lowe & Fletcher Locker Keys UK guide for manufacturer-specific information.

Ojmar Locker Key Numbers

Ojmar locks are widely used in commercial changing rooms and leisure environments. Depending on the product, the key reference may contain letters, numbers or manufacturer-specific series information.

• Check carefully for letter prefixes.
• Record the complete code.
• Identify whether the lock is a standard, security, coin or other Ojmar system.
• Check whether the locker operates in a wet or dry environment.
• Confirm the relevant key range before ordering.

Ojmar systems can also use master, service and coin-lock keys, so identify what type of key is actually required.

ASSA Locker Key Numbers

ASSA locking systems also use defined key and cylinder arrangements. A number that looks similar to another manufacturer’s key code should not be assumed to identify an equivalent replacement.

• Check the original key and lock face.
• Confirm ASSA branding where possible.
• Record the complete number.
• Check whether the lock belongs to an existing mastered system.
• Keep accurate site records when replacement cylinders are fitted.

Ronis, Probe, Helmsman, Pure, Link, Garran and QMP Key Codes

The same identification principle applies to other locker and lock manufacturers. Record the manufacturer and complete key code together rather than treating the number as a universal reference.

Total Locker Service supplies replacement keys for many common locker systems. Where the exact range is not obvious, send a close photograph of the key and lock face before ordering.

Step 4: Check Site and Maintenance Records

Schools, workplaces, universities, factories, leisure centres and other managed facilities may already hold the correct key information.

• locker allocation records;
• key registers;
• asset registers;
• facilities-management records;
• installation schedules;
• maintenance records;
• previous invoices and orders;
• original locker documentation;
• and securely held spare keys.

Before relying on an old record, confirm that the original locker lock has not subsequently been replaced. A replacement cylinder may use a different key code from the original schedule.

Step 5: Inspect the Lock Body if Necessary

Some identification information may appear on the rear or body of the lock rather than the visible face.

If authorised access is available and the key cannot be identified through the easier checks, inspection may reveal:

• a manufacturer name;
• a product reference;
• a lock-series marking;
• a stamped number;
• or information needed to identify the complete replacement lock.

Do not remove a serviceable locker lock unnecessarily merely to search for a number. Check the key, visible lock face, spare keys and records first.

If the lock itself cannot be identified, use our Locker Lock Identification Guide UK.

How Cam-Lock Key Numbers Work

Many conventional lockers use a keyed cam lock. The cylinder passes through the locker door and operates a metal cam on the inside. Turning the key rotates the cam behind the frame to secure or release the door.

The key number identifies a cutting pattern within a particular manufacturer’s lock series. It should not be treated as a globally unique locker identity.

Depending on the system, the same user-key code may appear on more than one lock. Facilities teams should therefore record both the locker number and the actual key code.

Similar-Looking Locker Keys Can Still Be Wrong

Locker keys should not be identified by appearance alone. Small differences in profile, cutting pattern and manufacturer series can make similar-looking keys completely incompatible.

• Check the full code.
• Check the manufacturer.
• Check any letter prefix.
• Check leading zeroes.
• Compare the lock face with the original key where possible.
• Use site records to confirm the locker and key relationship.

Common Locker Key Code Reading Errors

Possible error	Example	Better approach
Letter O and zero	O / 0	Photograph the marking closely
I and number one	I / 1	Compare with the manufacturer’s normal code format
S and number five	S / 5	Check under bright light
B and number eight	B / 8	Use several photograph angles
Missing prefix	A123 recorded as 123	Record every character
Missing leading zero	0123 recorded as 123	Copy the code exactly
Locker number used as code	Locker 125 ordered as key 125	Check the lock or key itself

What If the Locker Key Number Is Worn or Unclear?

Do not guess an unclear key number. One incorrect character can result in the wrong replacement key.

• Check both sides of the original key.
• Inspect the lock face.
• Take a sharp close-up photograph.
• Check another spare key for the same locker.
• Review the site’s key register.
• Check previous orders or invoices.
• Compare another lock from the same locker bank.
• Confirm the manufacturer and likely key series.

What If There Is No Visible Locker Key Code?

If neither the key nor lock face provides a readable code, work through the available evidence before changing the lock.

1. Check securely held spare keys.
2. Review the key register.
3. Check previous replacement-key orders.
4. Identify the locker manufacturer.
5. Identify the lock manufacturer.
6. Take clear photographs of the lock face.
7. Review installation and maintenance records.
8. If necessary and authorised, inspect the rear lock body.
9. Identify the complete lock before selecting a replacement.

If the key system cannot be identified reliably, replacing the lock may be more sensible than repeatedly ordering speculative keys.

What Does Cut to Code Mean?

A cut-to-code key is produced from the identified cutting information for the correct lock series rather than copied from an existing physical key.

This is useful when:

• the original key is missing;
• the existing key is worn or damaged;
• additional spare keys are required;
• a facilities team has an accurate key schedule;
• or several replacement keys are required across a site.

Once the code has been confirmed, see our Replacement Locker Keys by Code UK guide.

What About Master-Keyed Locker Locks?

Many schools, workplaces and commercial facilities use master-keyed locker locks. Each user normally has an individual key while authorised personnel hold a master or sub-master key for a defined group.

If an ordinary user key is lost but the master key remains available, authorised staff may be able to obtain access while a replacement user key is arranged.

Master, sub-master and override keys should not be confused with normal user-key codes. They provide higher-level access and should be controlled separately.

See our Master Key Locker Systems UK guide.

Replacement Key or Replacement Lock?

Situation	Likely action
Key lost, code known and lock undamaged	Order a replacement key
Additional spare required	Order another key
Key damaged but code readable	Use cut-to-code replacement
Code unclear but lock identifiable	Confirm manufacturer and key series
Lock barrel damaged or seized	Replace the lock
Lock has been forced	Inspect the lock, door and frame
No reliable identification possible	Consider lock replacement
Lost or stolen key creates a security concern	Consider changing the lock

A replacement key normally causes less disruption than changing a serviceable lock. However, key replacement should not override a genuine security concern.

If the hardware needs replacing, see our Locker Lock Replacement Guide UK.

When a Lost Key Creates a Security Concern

Being able to reproduce a locker key does not automatically mean replacement is the correct security decision.

Consider changing the lock when:

• the key may have been stolen rather than misplaced;
• the key can readily be associated with a particular locker;
• the locker contains higher-value or controlled equipment;
• there is a realistic risk of unauthorised access;
• the previous key must no longer operate the locker;
• or a master or management key has been compromised.

Locker Key Numbers and Bulk Replacement Orders

For larger locker estates, key codes make bulk replacement considerably easier. Facilities teams can review the locker bank, record missing keys and submit several confirmed codes together.

• Record the locker number.
• Record the key code separately.
• Record the lock manufacturer.
• Identify how many replacement keys are required.
• Check whether the lock has previously been changed.
• Separate damaged locks from simple missing-key cases.
• Record any master-key group.

Bulk replacement works best when the site maintains accurate key records rather than reconstructing the key system each time a key is lost.

Create a Locker Key Register

Record	Purpose
Locker number	Identifies the physical compartment
Location	Building, room or locker bank
Lock manufacturer	Identifies the likely key series
Key number or code	Provides the replacement reference
Assigned user	Supports operational control where appropriate
Master-key group	Preserves management access
Spare keys	Records controlled backup stock
Lock replacement date	Prevents obsolete key codes remaining on the register

Common Locker Key Identification Mistakes

• Using the locker number as the key code.
• Ignoring the lock manufacturer.
• Guessing a worn digit.
• Ignoring letter prefixes.
• Ignoring leading zeroes.
• Assuming similar-looking keys are interchangeable.
• Using an old register after a lock has been changed.
• Ordering another key when the lock itself is damaged.
• Confusing a master-key number with a user-key code.
• Ordering large quantities before confirming the correct series.

Found the Locker Key Code?

Once you have confirmed the manufacturer and complete key code, you can move from identification to replacement.

• Record the complete code exactly as shown.
• Include every letter prefix.
• Include leading zeroes.
• Confirm the manufacturer or key series.
• Check whether the lock has previously been changed.
• Confirm the required quantity.

Visit our Replacement Locker Keys UK page to select the appropriate manufacturer and code range.

Related Locker Key Guides

• Replacement Locker Keys – order replacement locker keys cut to code.
• Locker Keys by Brand – choose the appropriate manufacturer.
• Replacement Locker Keys by Code UK – what happens after the code has been identified.
• Locker Lock Identification Guide UK – identify an unknown complete lock.
• Lost Locker Key? What to Do Next – immediate steps after a key is lost.
• Locker Key Management Systems UK – key issue, tracking and return.
• Master Key Locker Systems UK – master and sub-master key control.
• Locker Locks – replacement and upgrade locks.

Locker Key Code FAQs

Find the Key Code Before Replacing the Lock

A missing locker key does not automatically require a new lock. Where the correct manufacturer and key code can be identified, a replacement key can often restore access while retaining the existing locker and locking system.

The important part is identifying the number correctly. Check the original key, lock face, manufacturer and site records, keep locker numbers separate from key codes and do not guess unclear markings.

Total Locker Service cuts replacement locker keys for many common locker and lock manufacturers and can help identify unfamiliar keys and locks from photographs and measurements.

Once you have the code, visit our replacement locker keys page, or contact us if the key or lock remains unidentified.

Call 01284 749211 or email sales@totallocker.co.uk.