A master key system solves a problem that gets worse as a business grows: who should be able to open what. Done properly, a director carries one key that opens everything, a department manager carries one that opens their floor and the stockroom, and a part-time member of staff carries one that opens the back door and nothing else. Done badly, everybody ends up with a bunch of eleven keys and quietly props the awkward doors open.

The design work matters more than the hardware. We map the site first — every door, who needs it, and under what circumstances — and build a hierarchy from that. It is worth spending time on because retrofitting a level into a badly planned system later usually means recutting a lot of keys. Sites with tenants, contractors or shared facilities need particular care, since the access map rarely follows the floor plan neatly.

Restricted key profiles are the part most businesses do not know to ask for and benefit from most. On a standard profile, anyone holding a key can walk into a kiosk and have it copied for a few pounds, and you will never know. On a restricted profile the blanks are controlled and cut only against your authorisation, so every key in existence is one you approved. When somebody leaves without returning theirs, that is the difference between a phone call and a full lock change.

We keep the key schedule on record, so when you need three more keys for the second floor in eight months’ time, the system is documented and the cutting is straightforward rather than a forensic exercise.

• Site-mapped master key hierarchies
• Restricted profiles with controlled blanks
• Key schedules documented and retained
• Additional keys cut on authorisation only
• Suited systems for multi-tenant buildings
• Existing systems extended or replaced

Escape hardware is the area where we are least flexible, because the consequences of getting it wrong are not commercial. Any final exit on an escape route must open from the inside, immediately, without a key, and without requiring anyone to know how the mechanism works. That is not a preference, it is what the standards require.

In practice two standards cover most sites. BS EN 1125 is panic hardware — the push bar, intended for premises used by the public who cannot be assumed to have any training. BS EN 179 is emergency hardware, a lever or pad, appropriate where the users are staff who know the building. Fitting the second where the first is required is a common and serious error, and it usually happens because somebody replaced like-for-like without checking what the premises had become.

The most frequent problem we are called to is not a failed bar but a door that has been made non-compliant deliberately. Staff prop it, someone gets tired of it being propped, and a bolt or a padlock appears. We understand exactly why that happens — usually the door is being misused as an entrance, or the alarm on it is too sensitive — but the answer is an alarmed release or a change to the access route, not a bolt. We will not fit anything that locks an escape route shut, and we will offer an alternative that solves the actual problem.

Door closers belong in the same conversation. A fire door that does not fully close and latch is not a fire door, and closers drift out of adjustment steadily with use. We check and adjust them as part of any escape hardware visit rather than treating them as a separate job.

• BS EN 1125 panic bar installation
• BS EN 179 emergency exit hardware
• Door closer adjustment and replacement
• Alarmed release as an alternative to bolting
• Escape route hardware inspection
• Faulty and seized panic hardware repair

Access control earns its cost through staff turnover. Every departure on a keyed system is a decision about whether to change the locks, and that decision is usually made on optimism. On a fob or code system it is thirty seconds of admin, the credential stops working, and nobody has to weigh the cost of a lock change against the likelihood of a problem.

It also gives you a record. Knowing which credential opened the stockroom at what time settles disputes that are otherwise unresolvable, and it is often the deciding factor for premises holding stock or handling cash. For businesses with shift patterns, time-restricted credentials that only work during a person’s working hours are straightforward to configure and remove a whole class of awkward conversation.

Standalone keypads suit a single door with a small team and cost very little. Networked systems make sense once you have several doors, multiple sites, or enough staff that manual administration becomes its own job. The honest advice is that most small sites are over-sold on this — a well-designed restricted key system serves a five-person office better than a network controller, and we will say so if that is our view.

Whatever is fitted must fail safely. On escape routes, access control has to release on power failure and on fire alarm activation, and it must be interfaced to the alarm panel properly rather than relying on a battery. That interface is the part that is skipped most often on cheap installations, and it is the part that matters most. It is also worth planning for the mundane failure modes rather than only the dramatic ones: fobs get lost in coat pockets, codes get shared between staff and then written on the back of a delivery note, and magnetic locks drift out of alignment as doors settle. None of those are catastrophic on their own, but each quietly erodes the control the system was installed to give you, so we set up a straightforward process for issuing and revoking credentials at handover and show whoever will actually be administering it how to use it.

• Standalone keypad entry for single doors
• Fob and card access for multi-door sites
• Time-restricted credentials by shift
• Access logs for stockrooms and cash areas
• Fail-safe release on escape routes
• Fire alarm interfacing done properly

Retail security is a different discipline from office security, because the threat is mostly out of hours and mostly through glass. A shopfront can have an excellent lock and still be entered in seconds through the window beside it, which is why security grilles and shutters do more for a retail unit than any lock upgrade.

The visible deterrent effect is the main return. Most retail break-ins are opportunistic and quick, and a unit that will clearly take noise and time to enter gets passed over for the one that will not. Collapsible concertina grilles suit units that must look open and welcoming while trading and fully secured overnight; fixed grilles work for rear windows, basements and delivery access that never need to open.

Roller shutters have their own maintenance profile that catches businesses out. They are high-cycle mechanical assemblies, and the failure is almost never sudden — it is a shutter that has been getting stiffer, or catching, or needing two people, for weeks. When it finally jams, it jams either fully down, in which case you cannot open, or fully up, in which case you cannot secure the unit overnight. Both are expensive on the day.

We service shutter mechanisms, replace worn locks and bottom-rail fixings, and repair the guide rails that cause most jams. Where a unit has been broken into we can secure it immediately and quote the permanent repair separately, so the shop can trade the next morning rather than waiting on a full replacement. Insurers frequently have specific requirements for retail premises that owners only discover at claim time, particularly around what protection ground-floor glazing must carry overnight and whether shutters need to be rated rather than simply present. It is worth checking your policy wording before specifying anything, and we are happy to quote against a particular requirement if your insurer has named one.

• Collapsible and fixed security grilles
• Roller shutter servicing and repair
• Shutter locks and bottom-rail fixings
• Emergency securing after a break-in
• Rear and basement access protection
• Survey and quote on site

Managed property throws up lock work constantly, and the value is in having one contractor who already knows the estate. Tenancy changeovers, communal door failures, contractor access, tenants locked out at inconvenient hours — individually trivial, collectively a significant administrative load if every instance means finding somebody new.

We hold key schedules for the sites we look after, attend multiple addresses in a single visit where they are close together, and invoice to an account rather than taking payment at each door. For communal entrances in blocks we generally recommend a restricted profile, because communal keys accumulate over decades and no managing agent inherits an accurate count of how many exist.

Compliance in converted buildings is the recurring issue. Flat entrance doors on internal escape routes need keyless egress from inside, and older conversions very often have a keyed mortice deadlock fitted at some point by a well-meaning landlord. We flag it when we find it and fit compliant hardware, because it is the kind of thing that becomes a serious problem only when it matters most.

We also carry out warrant and repossession attendance for bailiffs, housing associations and enforcement agents. That work requires correct documentation, appropriate conduct on site, and discretion, and it is a specialism relatively few London locksmiths are properly set up for. We attend, gain entry, and secure the property to the standard the instructing party requires, and we provide a written record of the attendance for the instructing party’s file. Because this work is often contentious and occasionally distressing for the occupant, we keep our conduct on site strictly professional and limited to the technical task we have been instructed to carry out, leaving all engagement with the occupant to the enforcement agent.

• Tenancy changeover lock changes
• Communal entrance restricted key systems
• HMO and flat escape door compliance
• Multiple addresses in a single visit
• Account billing for agents
• Warrant and repossession attendance

Almost every commercial lock emergency we attend was preventable, and usually visible for weeks. Commercial hardware is high-cycle: an entrance operated three hundred times a day accumulates more wear in a month than a house door does in years. It wears predictably, it announces itself before failing, and it fails during trading hours because that is when it is being used.

A scheduled service visit catches that. We check and adjust door closers, test panic hardware and escape releases, lubricate and assess cylinders, check shutter mechanisms and guide rails, and tighten the fixings that work loose on any high-traffic door. The output is a short written report telling you what is fine, what is wearing, and what should be budgeted for in the next few months.

The commercial case is straightforward. A planned closer replacement during quiet hours costs a fraction of an emergency callout on a Saturday, and none of the lost trading. For sites with a fire risk assessment, documented hardware checks also give you evidence that escape routes are being maintained rather than assumed.

Frequency depends on traffic. A busy retail entrance justifies quarterly attention; a small office suite is usually fine annually. We would rather set a realistic interval than sell an unnecessary contract, and for smaller sites we are happy to simply flag what to watch for so you can call us when it appears. Where a site has hardware approaching the end of its life, we will give you an indicative replacement window rather than a vague warning, so it can go into a budget cycle properly instead of arriving as an unplanned cost in the middle of a quarter. That tends to be the part facilities managers value most, because it converts an unpredictable risk into a line item.

• Scheduled door and hardware servicing
• Door closer checks and adjustment
• Panic hardware and escape route testing
• Shutter and grille mechanism servicing
• Written condition report after each visit
• Intervals set to actual traffic, not a template