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Mortice Deadlocks


We have a wide range of Mortice Deadlocks, Including Chubb, Era & Yale...FROM £6.72.

Traditional Nightlatches


We stock most brands Rim Nightlatches, including Yale, Ingersoll & Chubb...FROM £7.68

UPVC Multipoint Locks

      UPVC Multipoint Locks

UPVC Multipoint Locks, also fit Timber & Composite Doors ....FROM £19.44

Free Delivery (Over 80)

VAT Costs Included

Locks at Lock Monster. Door Locks, UPVC Door Locks, UPVC Handles, Window Security, Chubb Safes, Chubb Locks, Yale Safes, small covert safes, Garage Door Locks and many more.

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About (Independent Family Run, Selling Since 1985)  

As our name suggests, the is first choice for homeowners and work places up and down the UK looking to buy front door locks, window locks and many other lock products at some of the most competitive prices around. We hold a huge stock of products and have built a reputation for high-quality that`s backed up by robust customer service. If you`re looking to buy security locks for the first time, we have guides to help you locate the lock product, all part of our commitment to make it easy and affordable to buy locks online, and when you compare our prices to the High Street we`re confident you`ll wonder why you never used us before! With front door locks and other lock products available from Asec to Zone, we have a huge selection of brands to choose from that covers all the popular names like Banham Locks, Chubb Locks, Yale Locks, Avocet UPVC Multipoint Locks, Union Locks and Lockey Digital Locks, plus a wide variety of lesser well-known brands to save you searching high and low. Once you've found the right front door lock, or window locks you can order them online and pay via most major cards, Bacs and PayPal too for added convenience - plus ALL orders over £80 come with FREE standard shipping, making the prices at even more remarkable. We have a rapidly growing customer-base that is happy to recommend us to friends, family and colleagues - everyone`s keen to save money when it`s this easy! To complement our range of front door locks, window locks, cash boxes and many other types of lock, we also offer a large selection of home safes and office safes at extremely low prices - in fact our safes start from just £9.60 and you'll find top brand names such as Yale and Rottner at prices that are hard to beat.With over five thousand items in stock we`re sure that you`ll find what you need at LockMonster today - but if you have any questions before you buy front door locks, window locks or any other lock products, call us today and we`ll be happy to help you.

Help & Support

How do I remove my upvc euro door cylinder lock
How do I remove my upvc euro door cylinder lock Put the key in the lock (if you still have one, if not let us know). Remove the screw on the edge of the main door lock that is inline with the Euro cylinder, just under the latch.  Turn the key while apply pressure to the opposite end on the euro cylinder, as you do this you will feel the lock suddenly... Read more
Identify Your Window Handle
Identify Your Window Handle Have a look at the picture for the best help. Read more
Backset - What it is.
Backset - What it is. See the picture for more info. To determine the backset of any lock, measure from the edge of the lock face (include the front face plate) to the centre of the key hole. A popular size on standard locks can be 40mm or 53mm, there is not a standard. If it is slightly out you can move the... Read more
What is a rebate
What is a rebate This diagram shows what a rebate is, these are normally on double doors. If you have these you will need a rebate kit for the lock you are purchasing, these are not available for all locks, so if you do not find the one you require here, contact us and we can help find the nearest one. Read more
Split Spindle UPVC Lock
Split Spindle UPVC Lock If you use/buy a UPVC Multipoint lock with split spindle, this means if you unlock the door from outside, go in and just slam the door shut, it latches shut, so no one can follow you in without a key, but for added security you are best to lift the handles and double lock the multipoints. If it is not split spindle once... Read more
How to change a UPVC Handle
How to change a UPVC Handle This is how to fit a Yale UPVC door handle with 92mm between where the spindle of the handle goes through the door and the centre of where the key goes in. Read more
Help Fitting A Yale Type Cylinder
Help Fitting A Yale Type Cylinder Hints For Fitting A Cylinder Read more
Warning-Videos on how to bump cylinders are on YouTube
Warning-Videos on how to bump cylinders are on YouTube We have better quality cylinders to reduce or stop this form of bumping, a few are mentioned here: Avocet ABS, Cisa Astral S24, Squire Snapsafe, GeGe pExtra and more. Read more