Atlantic Hardware
Atlantic 3 Lever Key Deadlock [CE] 3" - Antique Brass
Sale price £13.06 (Inc. VAT) Normal Price: £16.33 £10.88 (Ex. VAT)Unit price /UnavailableYork Security
York - British Standard 5 Lever Deadlock 3" Polished Brass Finish
Sale price £26.86 (Inc. VAT) Normal Price: £33.58 £22.38 (Ex. VAT)Unit price /UnavailableYork Security
York British Standard 5 Lever Sashlock 2 1/2" - Matt Black
Sale price £28.70 (Inc. VAT) Normal Price: £35.88 £23.92 (Ex. VAT)Unit price /Unavailable- 20% off
From The Anvil
From The Anvil - Black 3" 5 Lever Heavy Duty BS Sash Lock
Sale price £56.06 (Inc. VAT) Normal Price: £70.08 £46.72 (Ex. VAT)Unit price /Unavailable - 20% off
Eurospec
Eurospec - 3 Lever Sashlock 64mm - Satin Stainless Steel
Sale price £23.23 (Inc. VAT) Normal Price: £29.04 £19.36 (Ex. VAT)Unit price /Unavailable - 20% off
Eurospec
Eurospec - Contract 3 Lever Sashlock 76mm - Satin Nickel
Sale price £7.97 (Inc. VAT) Normal Price: £9.96 £6.64 (Ex. VAT)Unit price /Unavailable York Security
York Security - 3" Deadlock 3 Lever - Antique Brass
Sale price £7.51 (Inc. VAT) Normal Price: £9.38 £6.26 (Ex. VAT)Unit price /UnavailableYork Security
York Security - 3" Deadlock 3 Lever - Matt Black
Sale price £7.51 (Inc. VAT) Normal Price: £9.38 £6.26 (Ex. VAT)Unit price /UnavailableYork Security
York Security - 3" Deadlock 3 Lever - Matt Bronze
Sale price £7.51 (Inc. VAT) Normal Price: £9.38 £6.26 (Ex. VAT)Unit price /UnavailableYork Security
York Security - 3" Deadlock 3 Lever - Polished Brass
Sale price £7.51 (Inc. VAT) Normal Price: £9.38 £6.26 (Ex. VAT)Unit price /UnavailableYork Security
York Security - 3" Deadlock 3 Lever - Polished Chrome / Polished Nickel
Sale price £7.51 (Inc. VAT) Normal Price: £9.38 £6.26 (Ex. VAT)Unit price /UnavailableYork Security
York Security - 3" Deadlock 3 Lever - Satin Brass
Sale price £7.51 (Inc. VAT) Normal Price: £9.38 £6.26 (Ex. VAT)Unit price /Unavailable

Standard Mortice Key Locks — Overview
2, 3 & 5 Lever Choices, Backset Sizes & UK Standards
Select standard mortice key locks by lever type and application. Use 2 lever mortice locks for low-security internal rooms, 3 lever mortice locks for moderate security, and 5 lever mortice locks for entrances—many are BS 3621 mortice locks that meet UK insurance policies. Confirm backset and case size (commonly 64 mm and 76 mm) to suit timber doors and your handle style. Keys are traditional lever keys with a castellated bit, often solid brass for durability. Coordinate finishes and functions across related ranges: Architectural Ironmongery, Accessories, Door Furniture, and Window Furniture.
Guidance & Use Cases
Sashlock vs Deadlock, Internal vs External, Practical Sizing
A mortice deadlock provides a key-operated deadbolt for secure locking, making it ideal for doors where you need extra security but no latch. Browse our range of Standard Mortice Key Deadlocks to find options in 2, 3, or 5 lever configurations, including BS 3621 certified locks for insurance compliance. Perfect for front doors, back doors, and other entry points where maximum strength is required.
A mortice sashlock combines a latch and deadbolt for everyday convenience with lever handles. Our Standard Mortice Key Sash Locks are available in 2 Lever Sash Locks, 3 Lever Sash Locks, and 5 Lever Sash Locks. For external doors, choose 5 lever British Standard mortice locks (BS 3621); for internal rooms, 2 lever or 3 lever may be suitable. Always check lock case dimensions, backset, and furniture type—knob sets often need a larger backset to avoid pinched fingers. If you need help selecting the right lock, please visit our Contact page for expert advice.
Frequently Asked Questions
What is a Standard Mortice Key Lock?
What is a Standard Mortice Key Lock?
A lock set into a pocket in the door edge and operated by a flat-bladed, castellated lever key. Available in 2, 3 or 5 lever versions for increasing security.
Which lever type should I choose: 2, 3 or 5 lever?
Which lever type should I choose: 2, 3 or 5 lever?
2 lever for low-security internal doors, 3 lever for moderate internal security, 5 lever for external doors or higher security. Look for BS 3621 for insurance compliance.
What backset and case size do I need?
What backset and case size do I need?
Common sizes are 64 mm and 76 mm. Choose backset and case depth to suit door thickness and handle type—knob sets often require a larger backset.
Sashlock vs deadlock—what’s the difference?
Sashlock vs deadlock—what’s the difference?
A sashlock has a latch and a deadbolt operated by handle and key; a deadlock is a key-operated deadbolt only.
What type of keys do mortice locks use?
What type of keys do mortice locks use?
Traditional lever keys with a castellated (stepped) bit, commonly solid brass; the notches lift the internal levers to retract the bolt.
UK-Wide Delivery & Expert Help
Standard Mortice Key Locks for Homes, Trades & Heritage Properties
We supply mortice key locks UK-wide, serving homeowners, joiners and builders in London, Manchester, Birmingham, Leeds, Glasgow and beyond. Build reliable specifications with traditional mortice door locks, insurance-approved 5 lever mortice locks, and practical guidance on lock fitting, lock case dimensions, backset selection, and building regulations relevant to door hardware. Coordinate with wider ranges — Architectural Ironmongery, Accessories, Door Furniture, and Window Furniture. If you can’t find exactly what you need, please contact us and we’ll assist.