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Master Key Systems - High-Intent Pages

These pages match real trigger events: quotes, conversion projects, expansion, lost keys, audits, and emergency containment.

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About us

Trusted master key system support

Speak to an MLA accredited locksmith team with in-house planning, documented suite records, and practical support before and after installation.

MLA Accredited
Aylesbury HQ
Online system management
Master Locksmiths Association BSI Kitemark

Master locksmiths with BSI accreditation

MLA approved locksmiths, BSI certified key systems, and independently audited security standards.

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Most common actions

If you’re not sure where to start, pick the closest trigger.

Start here

Get a Master Key System Quote

Fast scoping checklist: doors, cylinder types, roles, and expansion plans.

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Common trigger

How to Replace Lost Keys in an Existing Suite

Controlled replacement based on exposure level and operational constraints.

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Urgent

Emergency Rekeying for Master Key Suites

24/48 hour containment options for lost master tiers and suspected compromise.

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All high-intent pages

Convert Your Building to a Master Key System

Replace scattered locks with a designed hierarchy and clean governance.

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How to Expand an Existing Master Key Suite

Add doors, blocks or sites without drifting tiers or breaking the plan.

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How to Audit Outdated or Unknown Key Suites

Inherited suites with no records: restore documentation and control before decisions.

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Want the quickest route?

Start with the quote page. We’ll scope doors, roles and key control, then route you to the right system types and industry pages.

Get a quote Industries System types
Online management included

See how your whole system connects

Explore your keys, groups and communal doors in a visual system map. See expected access connections, give people the keys they need, and manage orders and permissions in one secure place.

People & permissionsNormal or management access, selected keys and date windows.
Restricted-order approvalsCheck the requester, delivery address and exact keys before deciding.
Complete order historySee every restricted order linked to the system in one place.
Timeline & documentsKeep customer-visible records separate from protected system charts.
Explore the interactive demo Open your systems
Your system, mapped out TSR123 · Example
MASMaster key
Group A
SMA · Sub-master
A1 A2
COMACommunal
Group B
SMB · Sub-master
B1 B2
COMBCommunal
Group C
SMC · Sub-master
C1 C2
COMCCommunal
Group D
SMD · Sub-master
D1 D2
COMDCommunal
Follow the groups. Find the shared doors. Explore expected key access.
Try the system map
Orders & approvals Owner view
Example owner decision: an unauthorised request is reviewed, denied and recorded. No real orders are shown.
Restricted-order approvals

You decide who gets the keys.

An order outside someone’s access comes to you for approval. Check who is ordering, where the keys are going and exactly what they requested. Approve it when it checks out, or deny it when it doesn’t.

Pair these approvals with PREM 4, our usual patented keyway, for control over key supply as well as who can order. Every decision leaves a record in your system’s history.

Try an example key order Order TSR / HMJ keys

Already have TSR or HMJ keys? Use the ordering page above. For another key range, contact us to find the matching product.