Lock changes
Lock changes
in East London
New locks after moving in, losing a key or a relationship ending. Insurance-approved locks fitted, with spare keys cut before we leave.
- MLA member
- Fully insured
- Open 24/7
- Card, cash, Clearpay or Klarna
Quick answer
Do I need a new lock or just a new cylinder?
On most uPVC and composite doors, and on doors with a nightlatch, only the cylinder needs changing. That is the part the key goes into. On a wooden door with a mortice lock, the whole lock is replaced.
Checked November 2026 by East London Locksmith Ltd, a Master Locksmiths Association member.
Fault finder
When to change your locks
Find what is happening to you. If it is not here, call us and describe it: we will tell you what it needs and what it will cost.
Tap what is happening to see the usual cause and fix.
| What you notice | Usually the cause | What we do |
|---|---|---|
| Just moved in | Previous owners, tenants or builders may still have keys. | New cylinders on every outside door. |
| Lost a key | Someone could use it. | New cylinder, old keys stop working. |
| Someone has moved out | An ex-partner, lodger or tenant kept a key. | New cylinder, usually 20 to 40 minutes a door. |
| Insurer asked for it | The lock is below the standard on your policy. | BS 3621 mortice or anti-snap cylinder fitted. |
| Too many keys | A different key for every door. | Keyed-alike cylinders, one key for every door. |
Just moved in
Usually: Previous owners, tenants or builders may still have keys.
New cylinders on every outside door.
Lost a key
Usually: Someone could use it.
New cylinder, old keys stop working.
Someone has moved out
Usually: An ex-partner, lodger or tenant kept a key.
New cylinder, usually 20 to 40 minutes a door.
Insurer asked for it
Usually: The lock is below the standard on your policy.
BS 3621 mortice or anti-snap cylinder fitted.
Too many keys
Usually: A different key for every door.
Keyed-alike cylinders, one key for every door.
Lock changes
What we do
If your insurer asks for a particular standard, we fit British Standard BS 3621 mortice locks and TS007 3-star anti-snap cylinders. Tell us what your policy says and we will match it.
- Lock changes after moving home
- Anti-snap cylinder upgrades
- BS 3621 mortice locks
- Nightlatches and deadlocks
- Keyed-alike sets, one key for every door
- Spare keys cut to match
What is included
- Price agreed before we start
- Insurance-approved locks to match your policy
- Keyed-alike option, one key for every door
- Spare keys cut to match
- Old locks taken away
Self-check
Check your front door in 30 seconds
Three quick checks tell you if your locks meet the standards most UK insurers ask for.
Master Locksmiths Association: what vetted, inspected and qualified means (opens in a new tab)- Look at the face of the cylinderA Kitemark with three stars, or the words Sold Secure Diamond, means it is anti-snap rated (TS007 3-star or SS312 Diamond).
- Check how far it sticks outIf the cylinder stands out more than about 3mm beyond the handle, it is easier to snap. A correctly sized one sits almost flush.
- Wooden door? Check the faceplateOpen the door and look at the metal plate on its edge. A Kitemark and BS 3621 means the mortice lock meets the usual insurance standard.
- Not sure?Call us and describe it, or ask us to check every door when we visit.
Good to know
Which lock for which door
The standards most UK home insurers ask for.
- Wooden front doorA BS 3621 mortice deadlock, usually with a nightlatch.
- uPVC or composite doorA TS007 3-star or Sold Secure Diamond anti-snap euro cylinder.
- Fire door to a flatA fire-rated cylinder so the door keeps its rating.
- Back door and patio doorsThe same standard as the front door, plus window locks.
Good to knowWhich lock for which door
- Wooden front doorA BS 3621 mortice deadlock, usually with a nightlatch.
- uPVC or composite doorA TS007 3-star or Sold Secure Diamond anti-snap euro cylinder.
- Fire door to a flatA fire-rated cylinder so the door keeps its rating.
- Back door and patio doorsThe same standard as the front door, plus window locks.
Four simple steps
How it works
7 days a week
- Tell us your doorsFront, back, uPVC or wooden. We give you a price per door.
- Pick a timeSame day if you need it, or a time that suits you.
- We fit the new locksMost doors take 20 to 40 minutes.
- Keys handed overWe test every lock and hand you the new keys.
Prices
Supplied and fitted prices
All prices are supplied and fitted: the lock, fitting and labour, with no hidden extras. We confirm your price on the call before we come out.
Euro cylinders
On most uPVC and composite doors, and many wooden ones.- Kitemarked 1-star cylinder, usually with 5 keys
- from £95
- Kitemarked 3-star anti-snap cylinder
- from £130
Nightlatches
The latch lock on many wooden front doors.- Nightlatch barrel (5-pin) replacement
- from £75
- Nightlatch replacement
- £90
- New nightlatch fitted
- £130
Mortice deadlocks
5-lever British Standard (BS 3621) locks for wooden doors.- Mortice deadlock replacement
- from £120
- New mortice deadlock fitted
- £150
The locks we fit
Quality locks, not cheap imports
Not all locksmiths use the same locks. Some fit cheap unbranded locks that can wear quickly and fail. We do not.
- From proper suppliersEvery lock we fit is bought from reputable, well-established UK locksmith wholesalers.
- British Standard and KitemarkedCylinders carry the BSI Kitemark to TS007, and our mortice deadlocks meet BS 3621, the standard most home insurers ask for.
- Built to lastBranded locks work smoothly for years. Cheap ones can stick, wear and fail, which means another call-out.
- One price, all-inclusiveThe lock, fitting and labour in one price, agreed on the call before we come out.
Where we work
Lock changes across East London
The same service and the same prices in every borough we cover, 24 hours a day.
What locks does my insurer want?
Many UK policies ask for a BS 3621 mortice lock on wooden doors, and a TS007 3-star or Sold Secure Diamond anti-snap cylinder on uPVC and composite doors. Check your policy wording and we will match it.
Can one key open all my doors?
Yes. We can fit keyed-alike locks so one key opens every door.
How long does a lock change take?
Usually 20 to 40 minutes per door.
Do I need a new lock or just a new cylinder?
On most uPVC and composite doors, changing the cylinder is enough. We check before we start.
Will a new lock affect my home insurance?
Fitting locks to the standard on your policy helps. We tell you which standard each lock meets, and put it on your invoice.
Can you change a lock without the key?
Yes. If you are locked out, we open the door first, check you live there, then fit the new lock.
Checked November 2026 by East London Locksmith Ltd, a member of the Master Locksmiths Association. Standards and advice on this page follow UK guidance.
Sources and further help