Master Key Systems & Master Suites in Surrey
Take control of your property's security and convenience with a professionally designed master key system from OC Services.
We're Surrey's local master suite specialists, providing expert design, installation, and ongoing management for
schools, colleges, offices, multi-use buildings, tenanted properties, and apartment blocks. Our DBS checked, fully insured team creates tailored solutions using high-security, restricted or non-restricted keys — minimising keychains and giving you total control over who can access each area.
Whether you need a simple keyed-alike set for a rental portfolio or a complex, multi-level master suite for a school or office building, We're here to help.
OC Services offers a complete range of master suite solutions for residential and commercial clients throughout Surrey. From simple keyed-alike sets to complex, multi-level master key systems, we handle everything in-house: survey, design, installation, upgrades, and ongoing management. We're EVVA EPS specialists and provide restricted key systems for maximum security and convenience.
Design & Installation
Bespoke master suite systems for schools, colleges, blocks, HMOs, offices, apartment buildings, and commercial premises. We survey your property, design a system tailored to your access needs, and install it — all in-house.
Upgrades & Conversions
Already have locks in place? We can often adapt your current hardware or supply new cylinders to convert your property to a secure, flexible master suite — without replacing every door.
Restricted & Registered Keys
High-security keys that can't be copied without written authorisation from a registered signatory. Perfect for landlords, block managers, schools, and businesses who need to control access and prevent unauthorised duplicates.
Ongoing Management & Key Supply
We provide ongoing management of your master suite, supply additional keys, and make changes as your needs evolve — always following your authorisation procedures. You'll never be left without support.
Keyed Alike & Multi-Level Suites
Simplify your security: one key for multiple doors, or tiered access for different users and departments. Flexible, scalable, and easy to manage as your property evolves.
Our lock change, opening, and repair services are available to all property types across Surrey. Click below to learn more about how we support your sector.
1. Get in Touch
Call us on 01483 600464 or email info@oc-services.co.uk to discuss your requirements. We'll ask about your property, the number of doors, and how you need access to work.
2. Survey & Consultation
We'll visit your property to assess your doors, locks, and access requirements. We'll explain your options — restricted vs non-restricted keys, keyed alike vs multi-level suites.
3. Bespoke Design
We design a master suite tailored to your property, mapping out which keys open which doors and setting up access levels for different users or departments.
4. Professional Installation
Our DBS checked, fully insured locksmiths install your system — all in-house, no subcontractors. We'll test every lock and key, and walk you through how it all works.
5. Handover & Ongoing Support
We hand over your keys, set up your signatory authorisation process, and provide ongoing management. Need extra keys or changes in the future? Just get in touch.
Master suites offer the ultimate combination of security and convenience. Control who accesses which areas, minimise keys, and enjoy peace of mind with robust, tamper-resistant hardware. Track who has keys and authorise duplicates only via registered signatories.
EVVA EPS Specialists— We're trained and approved EVVA EPS partners, providing the highest standard of master suite design and restricted key security.
Local, Family-Run Business— Based in Woking, serving Surrey since 2016. You'll always deal with our team directly.
DBS Checked & Security Vetted— Every member of our team is Enhanced DBS checked and vetted to BS7858 standards.
Fully Insured— All work is carried out by our fully insured team, with a workmanship guarantee for your peace of mind.
All Work In-House— No subcontractors. Our own trained locksmiths carry out every job.
Transparent Pricing— No hidden fees. You'll receive a clear quote before any work begins.
20+ Years' Experience— Our team brings decades of hands-on locksmith and master suite expertise.
Restricted Key Control— Keys that can't be copied without your written authorisation — preventing unauthorised access.
Ongoing Management— We don't just install and disappear. We manage your suite, supply keys, and adapt as your needs change.
Free Surveys & Advice— Not sure what you need? We'll assess your property and recommend the best solution — free of charge.
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OC Services is a family-run locksmith and security company based in Woking, trusted by homeowners, landlords, and businesses across Surrey since 2016.
We specialise in designing, installing, and managing master key systems for schools, colleges, offices, multi-use buildings, tenanted properties, and apartment blocks. Our DBS checked, fully insured, in-house team provides tailored solutions to simplify access and security for every property type.
As approved EVVA EPS partners, we offer the highest level of restricted key security — keys that can only be duplicated with your written authorisation. This gives you total control over who has access to your property.
We're proud to be part of the Surrey community. We sponsor Knaphill Football Club, support local schools and PTAs, and are members of the Defence Discount Service and Blue Light Card Scheme.
Ready to simplify your security? Book a free survey or get expert advice on master suites and key systems. Our team will explain restricted key options, the keyholder authorisation process, and the best solution for your property. We cover Woking, Guildford, Aldershot, Farnborough, Weybridge, Cobham, Godalming, and all surrounding Surrey towns.
📞 01483 600464✉️ info@oc-services.co.uk
Find answers to common questions about master key systems, restricted keys, and property security. Still have questions? Call or email us for honest, expert advice.
What is a master key system?
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What is a master key system?
A master key system allows different keys to open specific doors, while a master key opens them all. It’s ideal for schools, offices, HMOs, apartment blocks, and multi-user buildings. You control who can access which areas, with one key that overrides them all for management or emergency use.
What are restricted and non-restricted keys?
What are restricted and non-restricted keys?
Restricted keys can only be copied with your written authorisation and only by the locksmith who supplied them, preventing unauthorised duplicates. Non-restricted keys can be copied anywhere, so offer less control. We recommend restricted keys for any property where security and accountability matter.
How does the key signatory and authorisation process work
How does the key signatory and authorisation process work?
For restricted systems, only registered key signatories (e.g., site managers, landlords) can authorise new keys. We keep a secure record and require written or in-person approval before supplying duplicates. This ensures you always know who has access.
Can you upgrade my existing locks to a master suite?
Can you upgrade my existing locks to a master suite?
Yes, we can often adapt your current hardware or supply new cylinders to create a secure, flexible master suite for your property. We'll assess your locks during a free survey and recommend the most cost-effective approach.
Who are master suites suitable for?
Who are master suites suitable for?
Schools, colleges, offices, tenanted properties, apartment blocks, landlords, block managers, letting agents, and any building with multiple access levels or users. If you have more than a few doors and need to control who accesses what, a master suite is worth considering.
Can you manage and supply additional keys in future?
Can you manage and supply additional keys in future?
Yes, we provide ongoing management, supply additional keys, and make changes as your needs evolve — always following your authorisation procedures. You'll never be left without support.
What is the EVVA EPS system?
What is the EVVA EPS system?
EVVA EPS is a high-security, patented key system designed for master suites. Keys are restricted and can only be duplicated by authorised locksmiths with your written approval. It's one of the most secure and flexible master suite platforms available, and We're trained EVVA EPS specialists.
Already managing access with a master key suite? Take it further with a professionally installed access control system. Control who enters your building, track access in real time, and manage permissions remotely — all designed, installed, and maintained by our SSAIB-certified, DBS checked in-house team.
Contact us on 01483 600464 to arrange your Security Survey.
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OC Services is the trading name of OC Locks, Fire & Security Limited. Registered in England & Wales under company number: 12268605. VAT registration number: GB 350 170 733. Registered Address: OC Locks, Fire & Security Limited, Units 3 & 4 Bakersgate, 299A Connaught Road, Brookwood, Woking, Surrey, England, GU24 0AD.
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