From
New London House, EC36 London Street, City of London
To
Kensington and ChelseaSouth Kensington, Sloane Square
Job
Master key systemsfrom £180

Master key systems · EC3 dispatch
One hierarchy for plant, risers, offices and the street door. In Kensington and Chelsea that usually means mews garage-conversions on museum-fringe offices, reached from New London House on London Street, EC3R 7AD.
From
New London House, EC36 London Street, City of London
To
Kensington and ChelseaSouth Kensington, Sloane Square
Job
Master key systemsfrom £180
We write BS EN 1303, TS007, BS 3621 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 £180 plus the hour band. The quote you approve on Sloane Street is the invoice. No hidden drill.
Porters help identity. We still want the flat owner or tenant, not a guest.
We record who instructed the open. Neighbouring suites in museum-fringe offices look identical after midnight. Natural History Museum edge 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 mews off both. That is slower than a cowboy and cheaper than a complaint.

voice
Say Kensington and Chelsea, Sloane Street, the floor, the door type if you know it (mews garage-conversions), and who has the right to enter. Say whether security is on a desk. Say whether it is phased floor-by-floor swaps.
Do not say "near High Street Kensington" 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 Master Key Systems or a sibling service. Getting the noun right is how you get the right bag out of the van.
method
First: chart the doors. Every opening, who needs it, and who must never have it. In Kensington and Chelsea that is done against mews garage-conversions and mansion video.
Next: cut the hierarchy. Sub-masters, housekeeper keys, and a tightly held grand master. In Kensington and Chelsea that is done against mews garage-conversions and mansion video.
Finally: stamp and issue. Cylinders stamped, keys counted, extras held or destroyed. In Kensington and Chelsea that is done against mews garage-conversions and mansion video.
Standards we actually name on invoices from this patch include BS EN 1303. 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.
constraint
residents' parking is the Kensington and Chelsea version of "the van is close". We walk kits. Borough parking and estate barriers are normal.
Typical local job: period repairs. Typical local housing or occupier mix: mansion flats; mews houses.
Stations staff mention on the call: South Kensington, Sloane Square, High Street Kensington. They are not parking. They are how we know which court you mean.
hardware
Kensington and Chelsea doors in our notes: period timber; mews garage-conversions; mansion street doors. Cylinders and cases: mortices; brass furniture euros; garage locks. Access control around them: mansion video; porter desks; mews gates.
For master key systems we additionally carry restricted euro profiles, suite cylinders, construction-key systems. Failure modes that match this pair: unlabelled jam-jar keys; everyone on the grand master.
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
Kensington and Chelsea calls for master key systems tend to start on Sloane Street or mews off both, not on a generic London map pin. The working landmark is Natural History Museum edge. The working station is High Street Kensington. CITY OF LONDON LOCKSMITH1 LTD dispatches from EC3R and treats this as a neighbouring borough run, with residents' parking already priced into how long the last hundred metres take.
The door in front of you is likely mews garage-conversions. The ironmongery is likely mortices. The failure that got you here is often unlabelled jam-jar keys. 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 Kensington and Chelsea is not enough.
Non-destructive entry is the default on this patch, as it is on master key systems 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.
night
Porters until late on some blocks; mews go very quiet; King's Road still moves.
Timing band for this service: phased floor-by-floor swaps. This is a neighbouring-borough clock from EC3, quoted honestly, not a Monument-speed fantasy.
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.
stock
museum-fringe offices dominates the Kensington and Chelsea mix. That is why construction-key systems shows up on this job more often than a suburban nightlatch. We keep key tags on the van because period repairs is not a rare event here.
Mews names repeat across the borough. Give the parent street as well. If you only say "Kensington and Chelsea" we will still come; if you say Sloane Street and the intercom number we will stand in the right court.
Heritage or campus rules on this patch: Porters help identity. We still want the flat owner or tenant, not a guest. Related openings live on locksmith work in Kensington and Chelsea and on areas covered.
after
You should leave with a working key or a reset, a written figure, and a note of the stamp on mortices. 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.