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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 -
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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 -
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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
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York Security - British Standard 5 Lever Sashlock 2 1/2" - Antique Brass
Sale price £28.70 (Inc. VAT) Normal Price: £35.88 £23.92 (Ex. VAT)Unit price /Unavailable
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York Security - British Standard 5 Lever Sashlock 2 1/2" - Matt Bronze
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York Security - British Standard 5 Lever Sashlock 2 1/2" - Polished Brass
Sale price £28.70 (Inc. VAT) Normal Price: £35.88 £23.92 (Ex. VAT)Unit price /Unavailable
20% offYork Security
York Security - British Standard 5 Lever Sashlock 2 1/2" - Polished Chrome / Polished Nickel
Sale price £28.70 (Inc. VAT) Normal Price: £35.88 £23.92 (Ex. VAT)Unit price /Unavailable
20% offYork Security
York Security - British Standard 5 Lever Sashlock 2 1/2" - Satin Brass
Sale price £28.70 (Inc. VAT) Normal Price: £35.88 £23.92 (Ex. VAT)Unit price /Unavailable
20% offYork Security
York Security - British Standard 5 Lever Sashlock 2 1/2" - Satin Chrome / Nickel Finish
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20% offYork Security
York Security - British Standard 5 Lever Sashlock 3" - Antique Brass
Sale price £28.70 (Inc. VAT) Normal Price: £35.88 £23.92 (Ex. VAT)Unit price /Unavailable
20% offYork Security
York Security - British Standard 5 Lever Sashlock 3" - Matt Bronze
Sale price £28.70 (Inc. VAT) Normal Price: £35.88 £23.92 (Ex. VAT)Unit price /Unavailable
20% offYork Security
York Security - British Standard 5 Lever Sashlock 3" - Polished Brass
Sale price £28.70 (Inc. VAT) Normal Price: £35.88 £23.92 (Ex. VAT)Unit price /Unavailable
Selecting the Right Standard Mortice Key Sash Lock
Lever Counts, Security Grades & Installation Guidance
Standard mortice key sash locks are available in 2 lever, 3 lever, and 5 lever variations to suit security needs from light-duty internal use to insurance-approved external protection.
- 2 lever – basic privacy and light security for internal doors like bedrooms or storage rooms.
- 3 lever – added key variation and strength for busier internal doors or interlinked office spaces.
- 5 lever – high security, often BS3621-rated, for front, back, and side timber entrance doors.
Typical case sizes include 64 mm (2.5") and 76 mm (3"), selected based on door thickness and handle placement. Match your lock with coordinated door furniture, door handles & knobs, and standard profile escutcheons for a consistent look.
We also recommend exploring architectural ironmongery, premium accessories, and window furniture to complete your installation.
Need Help Choosing the Right Lock?
Expert Support for UK Door Security
Not sure which lever count or case size to choose? Our experts provide guidance on internal vs external use, British Standard compliance, and finish matching to achieve a cohesive look. We supply nationwide—including London, Manchester, Birmingham, Glasgow, Bristol—with competitive delivery times.
If you can’t find what you’re looking for, contact us and we’ll assist you.
Frequently Asked Questions
What is a standard mortice key sash lock?
What is a standard mortice key sash lock?
A standard mortice key sash lock is recessed into the edge of a door and combines a handle-operated latch for everyday use with a key-operated deadbolt for secure locking.
Should I choose 2, 3 or 5 lever?
Should I choose 2, 3 or 5 lever?
2 lever is suitable for low-risk internal doors, 3 lever offers more key variations and moderate security, and 5 lever is best for external doors—often BS3621 approved for insurance.
What size lock should I choose: 64 mm or 76 mm?
What size lock should I choose: 64 mm or 76 mm?
64 mm (2.5") is compact and suits most internal doors. 76 mm (3") gives a larger backset to position the handle further from the door edge—often preferred for entrance doors.
Are 5 lever sash locks insurance approved?
Are 5 lever sash locks insurance approved?
Look for BS3621 in the product specification or on the lock faceplate—this standard meets UK home insurance requirements for external timber doors.
Trusted UK Supplier for Over Four Decades
Quality Mortice Locks from Leading Brands
We stock trade-trusted brands including From The Anvil, Carlisle Brass, Heritage Brass, and Frelan Hardware. Choose finishes like satin chrome, polished brass, or matte black to match your door furniture and door handles & knobs. We deliver nationwide—from Cumbria to London, Manchester, Birmingham, Leeds, Bristol, and Glasgow—helping homeowners, contractors, and designers achieve secure, stylish results.