137 - 139 Wood Street, Walthamstow, East London, E17 3LX

Call Us On: 020 8520 7450 & 020 8521 2444      

Email: info@dennissecurity.co.uk



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We stock a full range of products ranging from a basic rim Nightlatch to high security locking systems.


We supply and fit locks to Wooden, Metal and UPVC windows and doors as well as Digital Locks, locks for Gates, Roller shutters and Safes.


Wooden Doors/Windows:

We can supply and fit locks on wooden doors ranging from a 3 lever deadlock/sashlock on a bedroom door through to a British standard 5 Lever Deadlock under BS3621 to your front door.

There is also a wide range of Digital/Push button locks available

We can fit locks to all designs of wooden windows.


Please note many insurance companies require a BS 3621 5 Lever deadlock to be fitted to your last exiting door and key locking windows to comply with the policy.


UPVC Doors/Windows:

We can supply and fit locks to UPVC doors ranging from a cylinder change right through to a whole new multipoint locking strip and handles.

If you are having difficulty operating your UPVC door then we can attend site to fault find and obtain the required products needed to solve your problem.

We keep a wide range of cylinder sizes in our showrooms and on our vans.

We can fit locking handles to windows.


Metal Doors/Windows:

We can supply and fit locks to Metal doors and windows ranging from a mortice deadlock to an Adams Rite hook lock/Bar lock/Latch, which are most commonly fitted to shop fronts.

We can fit key operated locks to various metal windows all of which can be seen at our showroom.



We stock a vast range of size and price of padlocks from a 20mm padlock for your suitcase to a high security unit for your gate. These are available in key or combination. We can also make padlocks under the same key. If you have a master suite, ask us about padlocks under your master key.

Fire Brigade padlocks are also available.


Office Furniture:

We have a comprehensive range of cupboard and desk locks in stock.


Digital/Push button Locks:

These range from a simple Codelock to a higher security Simplex/Unican lock. These enable you to gain entry via a code as apposed to a key.



We supply and fit additional deadlocks to commercial vans. We also stock hasps and discus padlocks which can be fitted on rear double doors. Armaplate make vehicle lock protection for certain makes and models of van, these protect the existing door locks and are supplied to order.  



Do you need an extra safe key? Have you snapped your key? Have you forgotten your combination? If so we can help


All leading makes are available to view in our showroom, so please feel free to pop in and discuss your security needs.


Panic Hardware for Fire Exits:

We can supply and install various locking systems for fire exit doors, it is a legal requirement that you have the correct panic hardware fitted depending on who uses the building:


Members of the public and Staff: Exit hardware needs to conform to EN1125 this is so that untrained users can escape from the building in an emergency with no prior training on how to operate the exit door.


Staff only: Exit hardware needs to conform to EN179 this is for trained users who know how to operate the exit door.

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Please feel free to give us a call on

020 8520 7450

to discuss your needs further...