From
New London House, EC36 London Street, City of London
To
LeadenhallBank, Monument
Job
Lock changefrom £85

Lock change · EC3 dispatch
Cylinders, mortices and multipoints changed to a standard that holds. In Leadenhall that usually means Lloyd’s-adjacent commercial on insurance towers, reached from New London House on London Street, EC3R 7AD.
From
New London House, EC36 London Street, City of London
To
LeadenhallBank, Monument
Job
Lock changefrom £85
Say Leadenhall, Lime Street, the floor, the door type if you know it (Lloyd’s-adjacent commercial), and who has the right to enter. Say whether security is on a desk. Say whether it is same-day City changes.
Do not say "near Fenchurch Street" as the only address. Do say the intercom label. Do send a forend photo if the street is quiet enough.
We will tell you if the job is actually Lock Change and Repair or a sibling service. Getting the noun right is how you get the right bag out of the van.
insurance towers dominates the Leadenhall mix. That is why nightlatches shows up on this job more often than a suburban nightlatch. We keep cylinders on the van because tower suite lockouts is not a rare event here.
Give the tower name as it is written on the pass, not the nickname, if security is going to meet us. If you only say "Leadenhall" we will still come; if you say Lime Street and the intercom number we will stand in the right court.
Heritage or campus rules on this patch: Tower security is a partner. We do not bypass a desk that already knows the occupier. Related openings live on locksmith work in Leadenhall and on areas covered.

night
Towers empty; market restaurants run; Lime Street becomes a canyon.
Timing band for this service: same-day City changes. This is first-ring from London Street, still subject to the constraint on the kerb.
WhatsApp +44 7895 673226 accepts a photo of the forend if you are safe to take one. The phone remains 020 3371 1246. Company number 11001390 sits on the invoice.
method
First: measure. Cylinder length, cam, offset, and the door thickness before we pull the old lock. In Leadenhall that is done against Lloyd’s-adjacent commercial and tower turnstiles.
Next: match the grade. Insurance and door type decide BS 3621, TS007, or a commercial oval. In Leadenhall that is done against Lloyd’s-adjacent commercial and tower turnstiles.
Finally: fit and hand keys. Operation tested, old keys destroyed on request, receipt left. In Leadenhall that is done against Lloyd’s-adjacent commercial and tower turnstiles.
Standards we actually name on invoices from this patch include BS 3621. We do not print a kitemark we did not fit. If your insurance schedule is tighter than the barrel in the door, that becomes a lock change on the same visit if you want it quoted as a separate line.
portfolio
Occupiers who hold a Leadenhall door often hold another in Bank. We can chart those on a master key visit rather than as three panics.
The EC district pages (EC3, EC2, EC4, EC1) exist for postcode searches. Neighbourhood pages exist for people who know the street.
Privacy and cookies are on privacy and cookies. Maps on the contact page load only after you opt in. We do not invent star ratings.
hardware
Leadenhall doors in our notes: tower glass; market shutters; Lloyd’s-adjacent commercial. Cylinders and cases: high-security plant; market euros; slimline suite locks. Access control around them: tower turnstiles; market trader doors; roof-plant biometrics plus key.
For lock change and repair we additionally carry TS007 3-star cylinders, BS 3621 cases, multipoint gearboxes. Failure modes that match this pair: worn plug; snapped cam.
If the reader is the failure rather than the cylinder, pivot to access control. If the opening is damaged, pivot to burglary repair. If you simply need the suite open, office lockout may be the tighter description.
open
Leadenhall calls for lock change and repair tend to start on Lime Street or Fenchurch Avenue, not on a generic London map pin. The working landmark is The Scalpel. The working station is Fenchurch Street. CITY OF LONDON LOCKSMITH1 LTD dispatches from EC3R and treats this as a Square Mile run, with tower loading bookings already priced into how long the last hundred metres take.
The door in front of you is likely Lloyd’s-adjacent commercial. The ironmongery is likely market euros. The failure that got you here is often worn plug. We confirm lawful access before a pick enters the keyway: occupier, director, nominated facilities lead, or written authority from the agent. A name on a doorbell in Leadenhall is not enough.
Non-destructive entry is the default on this patch, as it is on lock change and repair city-wide. Drilling is a named decision on the pavement. Read price bands if you can; night and Sunday supplements are written, not invented after the door is open.
standards
We write BS 3621, TS007, PAS 24, BS EN 1303 when we have fitted or tested them. A "high security" unbranded barrel bought to look the part is how the next attacker gets in.
Insurance language in the Square Mile and its neighbours still leans on BS 3621 for certain final exits and TS007 for replacement euros. If your schedule says otherwise, send it.
From-price for this service starts at £85 plus the hour band. The quote you approve on Lime Street is the invoice. No hidden drill.
law
Tower security is a partner. We do not bypass a desk that already knows the occupier.
We record who instructed the open. Neighbouring suites in insurance towers look identical after midnight. The Scalpel is a meeting point, not a proof of tenancy.
CITY OF LONDON LOCKSMITH1 LTD will wait for ID rather than rush a wrong door on Fenchurch Avenue. That is slower than a cowboy and cheaper than a complaint.
after
You should leave with a working key or a reset, a written figure, and a note of the stamp on market euros. Old keys can be destroyed on request.
If staff still share one key between a floor, master key systems is the planned conversation. If the closer slammed the latch, the closer is part of the job, not a mystery for next week.
The legal entity is CITY OF LONDON LOCKSMITH1 LTD, New London House, 6 London Street, London EC3R 7AD. Contact and map after cookie consent. About the company for the boring facts.
Call the EC3 yard. We quote at the door after we see the lock.