When you call a professional locksmith, you aren’t just buying a lock; you are investing in a specific tier of security. The difference between a standard lock and a high-security brand can mean the difference between a secure home and a vulnerable one.
This guide provides a deep-dive analysis of the six most significant lock brands used by locksmiths today. We compare specific models, clarify the “Chubb vs. Union” confusion, and provide side-by-side specifications to help you make the right choice.
1. Banham Locks: The London “Gold Standard”
Banham is widely considered the most prestigious lock brand in the UK, specifically in London. Their locks are easily identifiable by the distinct “lock guard” that acts as a visual deterrent to burglars.
Famous Models & Particularities
Banham locks are rarely sold as standalone items to the general public; they are part of a controlled ecosystem.
- Key Registration: You cannot cut a Banham key at a standard cobbler. You must be the registered owner to order copies.
- Keyed Alike: It is standard practice to fit an L2000 (nightlatch) and M2002 (deadlock) that work with the same key.
Banham Model Comparison
| Model Name | Lock Type | Security Rating | Unique Feature |
| Banham L2000 | Rim Nightlatch | BS3621 | Self-deadlocking (bolt locks automatically when door closes). |
| Banham M2002 | Mortice Deadlock | BS3621 | Hook bolt design for anti-spread protection. |
| Banham M2003 | Mortice Deadlock | BS3621 | Operated by thumbturn on the inside (fire safety). |
Why Locksmiths Use Them: High-end residential properties require high aesthetic standards and strict key control. Banham delivers both.
2. Yale Locks: The Versatile Giant
Yale is the most recognizable name in the industry. While they make budget locks, their “Platinum” and “British Standard” ranges are top-tier high-security products.
Famous Models & Particularities
- The “Yale Lock”: This term usually refers to a nightlatch. However, standard versions (No. 1 / No. 2) are not high security. You must upgrade to the PBS series for insurance approval.
- Platinum Cylinders: For uPVC doors, Yale’s Platinum 3-Star cylinder is a locksmith favorite because it resists snapping, picking, and drilling.
Yale Model Comparison
| Model Name | Lock Type | Insurance Approved? | Best Application |
| Yale No. 1 / No. 2 | Standard Nightlatch | No | Internal doors or as a secondary latch only. |
| Yale PBS1 / PBS2 | High Security Nightlatch | Yes (BS3621) | Main front door lock; features 20mm anti-saw bolt. |
| Platinum 3-Star | Euro Cylinder | Yes (TS007) | uPVC or composite doors; Anti-Snap protection. |
| Yale Conexis L1 | Smart Lock | Yes | Keyless entry for modern homes. |
Why Locksmiths Use Them: Yale offers a solution for every price point, from basic latches to police-approved smart locks.
3. Era Locks: The “Total Security” Solution
Era is often the “go-to” brand for locksmiths needing robust, affordable, and compliant replacements. They focus heavily on the BS3621 standard.
Famous Models & Particularities
- The Fortress Series: This is Era’s flagship mortice lock range. It uses hardened steel plates to stop drilling and “false notching” on levers to stop lock picking.
- Invincible Cylinder: A distinctive cylinder shape designed to be virtually unbreakable, though it requires a specific handle set.
Era Model Comparison
| Model Name | Lock Type | Mechanism | Key Feature |
| Era Fortress | Mortice Deadlock | 5-Lever (BS3621) | Hardened steel plates; 20mm bolt throw. |
| Era Classic | Mortice Deadlock | 5-Lever | Standard security; often lacks anti-drill plates. |
| Era Viscount | Mortice Deadlock | 5-Lever | Reliable mid-range option for internal security. |
| Invincible | Cylinder | High Security | Reinforced bar prevents snapping. |
Why Locksmiths Use Them: The Era Fortress is arguably the most common insurance-approved deadlock used for retrofitting older doors.
4. Mul-T-Lock: The Cylinder Specialist
If you see a key with “dimples” (small craters) instead of jagged teeth, it is likely a Mul-T-Lock. They specialize in high-security cylinders that fit into other lock bodies.
Famous Models & Particularities
- Telescopic Pins: Mul-T-Lock uses a “pin-within-a-pin” system. This makes picking exponentially harder than standard locks.
- The Alpha Spring: Found in the MT5+ range, this is a moving part on the tip of the key that engages a special pin in the lock, making 3D printing a key nearly impossible.
Mul-T-Lock Platform Comparison
| Platform Name | Security Level | Key Copying | Technology |
| Garrison (7×7) | Entry Level | Restricted | Standard pin mechanism. |
| Interactive+ | High Security | Patented | Telescopic pins + Floating element in key. |
| MT5+ | Maximum Security | Strictly Controlled | Telescopic pins + Alpha Spring + Locking Bar. |
Why Locksmiths Use Them: For commercial clients or landlords who need “Master Key” systems (one key opens everything, tenant keys open only one door), Mul-T-Lock is the industry leader.
5. Chubb Locks (Union): The Legacy Heavyweight
Important Note: The brand “Chubb” no longer manufactures residential locks. The brand was acquired, and these locks are now manufactured by Union (part of Assa Abloy). However, the designs remain identical.
Famous Models & Particularities
- 3G114 (The “Chubb” Deadlock): This is the legendary 5-lever deadlock found on millions of UK homes. It features “detainer” levers which offer smoother operation and higher security than standard levers.
- StrongBOLT: Union’s modern version. It features a “chamfered” (sloped) bolt, which makes it easier to close the door if the frame has warped slightly.
Union (Chubb) Model Comparison
| Model Name | Lock Type | Upgrade Path | Particularity |
| 3G114 | Mortice Deadlock | Replaces old Chubb 3G114 | The exact “like-for-like” replacement for old Chubb locks. |
| 3K74 | Mortice Sashlock | Replaces old Chubb 3K74 | Includes latch and bolt; heavy-duty case. |
| StrongBOLT | Mortice Deadlock | New Installations | Chamfered bolt for smoother closing on warped doors. |
Why Locksmiths Use Them: When a customer asks to “replace my old Chubb lock,” the Union 3G114 is the only correct answer.
6. Ingersoll Locks: The “Impregnable” Nightlatch
Ingersoll is a niche but legendary brand. Their SC71 lock is often called the “Rolls Royce” of nightlatches due to its massive strength and unique design.
Famous Models & Particularities
- 10-Lever Mechanism: While most locks have 5 levers, the Ingersoll SC71 has 10. This makes it incredibly resistant to picking.
- The “Domed” Barrel: The keyhole is housed in a domed shape, making it very difficult for burglars to grip with pliers or wrenches to twist it off.
Ingersoll Model Comparison
| Model Name | Lock Type | Application | Deadlocking? |
| Ingersoll SC71 | Rim Lock (Nightlatch) | Front Doors | Yes (Auto-deadlocking on close). |
| Ingersoll SC73 | Rim Lock (Nightlatch) | Communal / Fire Doors | No (Cannot be deadlocked from outside). |
Why Locksmiths Use Them: They are expensive, but for high-value wooden doors, the SC71 provides unrivaled physical strength and longevity. Need a fast locksmith in London? Locked out, need new locks, or a security upgrade? Visit Locksmithforlondon.co.uk, check out Affordable Locksmiths Kensington, or explore Affordable Locksmiths Earls Court.
