YOUR CAR
CAN BE STOLEN
in under 60 seconds with no alarm triggered
Stop relay theft in London
Hardwired immobiliser fitting at your door — home, workplace, or anywhere across Greater London. We cut the ignition circuit before thieves ever get a chance.
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Relay car theft is not a random crime — it is a planned, organised operation carried out by teams who scout residential streets, identify keyless vehicles, and return at night with equipment that turns your key signal against you. London is their primary hunting ground. A hardwired immobiliser is the one measure that makes your vehicle physically impossible to start without your authorisation.
Why London vehicles are targeted above anywhere else
The density of London’s residential streets creates ideal conditions for organised theft crews. Vehicles sit overnight within metres of front doors in virtually every borough, and the volume of high-value cars — particularly keyless SUVs and prestige saloons — concentrated across zones two through six makes the city uniquely attractive. Unlike rural or suburban areas where unusual activity stands out, thieves can operate in London streets without attracting attention at any hour.
Outer boroughs bear a disproportionate share of commercial vehicle theft. Tradespeople parking Transit vans and Sprinters on residential roads in Enfield, Barking, Hounslow and Waltham Forest face particular risk — their vehicles are targeted both for the tools inside and for the vehicles themselves, which are re-plated and resold or exported. In inner zones, premium SUVs are taken to order: Range Rovers, BMW X5s, and Land Cruisers are frequently commissioned by overseas buyers before the theft even happens.
Standard vehicle alarms and steering locks were designed for a different era of car crime. They offer no resistance to relay attacks because the car itself believes the correct key is present — the alarm never triggers, the locks open voluntarily. Only a circuit-level intervention, a physical break in the ignition or fuel supply wiring, can reliably stop a relay-equipped crew from driving away in your vehicle.
Any vehicle built after 2015 with push-button start or keyless entry is vulnerable to relay attack regardless of manufacturer, alarm system, or price. The attack exploits the vehicle’s own legitimate technology — not a flaw that manufacturers have been able to patch.
LockCar immobiliser range — built in the UK
Every LockCar unit is engineered and assembled in the United Kingdom. The lineup runs from a focused standalone immobiliser for owners who want straightforward protection through to combined dashcam and 4G remote-control systems for fleet operators who need live oversight of multiple vehicles. All models share the same core: a concealed 20-amp hardwired relay that physically interrupts the vehicle’s start circuit.
How thieves bypass your key fob without touching it
Every keyless entry system broadcasts a continuous low-level radio pulse. Under normal use, your key fob only responds when you are close to the car — within a metre or two. The fob and car exchange an encrypted handshake, the doors unlock, and the ignition authorises. The weakness is not the encryption; it is the distance assumption. Relay equipment destroys that assumption entirely.
Theft crews work in pairs. One operative positions themselves outside your home — near the letterbox, a ground-floor window, or a thin exterior wall — and activates a signal capture device tuned to your key fob’s frequency. The amplified signal is relayed wirelessly to a second operative standing beside your vehicle on the road. The car receives what appears to be a valid, proximate key, unlocks, and starts. The entire process is completed in silence. Your alarm never sounds. Your key never moves. Your car is gone.
A relay immobiliser works at the electrical circuit level — below the layer that keyless entry systems operate at. No radio signal, however amplified or sophisticated, can close a physical relay that requires an encrypted local authentication signal. It is not a software patch; it is a fundamental circuit break that radio cannot bridge.
Mobile fitting — we come to you across all London postcodes
LockCar sends a technician directly to your chosen location anywhere in Greater London. Inner zones E, N, NW, SE, SW, W, EC, and WC are covered as standard, alongside all outer postcode areas including BR, CR, DA, EN, HA, IG, KT, RM, SM, TW, and UB. If you are working from a building site, a business address, or simply want the fitting done on your driveway before you leave for work in the morning, we accommodate that.
Fitting time runs between 45 and 90 minutes depending on your vehicle’s make, model, and the complexity of its electrical architecture. The relay module is hidden inside the vehicle at a position chosen specifically for your car — not a standard location that a knowledgeable thief could look up. All wiring connections are soldered and sealed rather than crimped, which prevents failures from vibration or moisture over time. Before the engineer leaves, you are walked through exactly how your chosen unlock method operates.
Every Greater London postcode
Inner zones E, N, NW, SE, SW, W, EC, WC and outer areas BR, CR, DA, EN, HA, IG, KT, RM, SM, TW, UB, WD — plus locations up to 10 miles beyond the M25 on request.
Same-day and next-day slots
Urgent bookings accepted subject to technician availability in your area. WhatsApp enquiries receive a response within the hour during working hours.
45–90 minutes, no garage needed
The technician arrives with all equipment. Your vehicle stays at your location throughout — no drop-offs, no waiting rooms, no wasted half-days.
12-month installation warranty
Every fitting is guaranteed for 12 months. Any wiring or device issue that develops in that period is resolved by a return visit at no cost to you.
Frequently asked questions
Does fitting an immobiliser void my car’s manufacturer warranty?
LockCar installations are carried out to automotive industry wiring standards. The relay connects into the circuit in a way that does not modify the vehicle’s ECU or CAN bus systems. Manufacturer warranties cover defects in the vehicle’s own components — an added security device installed by a professional does not automatically void those terms. If you are planning warranty work on electrical systems and want complete certainty, notify your dealer beforehand.
Could fitting this device reduce my car insurance premium?
A number of UK motor insurers acknowledge additional approved security hardware when calculating premiums — particularly for high-risk vehicle categories. Before you book, it is worth calling your insurer to ask whether they accept third-party immobilisers and what documentation they require. We issue a signed certificate of installation with every fitting, which most insurers will accept as evidence.
What if my phone runs out of battery and I cannot use the app?
No LockCar device leaves you dependent on a single point of failure. Every app-controlled model ships with a physical backup — either a wireless proximity tag or a secondary unlock sequence. If neither is accessible, our support line can issue a one-time override code to get you moving. You will not be stranded.
Do you fit immobilisers on vans and commercial vehicles, not just cars?
Yes — all LockCar models support 12V and 24V electrical systems, covering everything from small hatchbacks to large panel vans and light commercial vehicles. The IC3ST and IS357 are particularly popular with London tradespeople running Transit-sized vans. If you operate a mixed fleet, contact us to discuss a multi-vehicle booking rate.
How difficult is it for a thief to find and remove the immobiliser?
The installation location is chosen based on your specific vehicle’s layout and is not documented or disclosed. The relay and associated wiring are concealed behind trim panels and within existing cable runs. Locating and bypassing a professionally hidden relay — without triggering other vehicle systems — requires detailed knowledge of that exact vehicle model and considerable time. In practice, a thief presented with an immobilised vehicle will abandon it and move on to an easier target.
Book your London immobiliser fitting today
The fastest way to book is via WhatsApp — send your vehicle make, model, year, and postcode and we will come back to you within the hour with availability and a confirmed price. There is no obligation and no pressure: we will ask a few questions about how you use the vehicle and recommend the most appropriate unit from the range before you commit to anything.
Book your fitting now
Mobile across all postcodes · Same-day slots available · 12-month warranty included
WhatsApp to book → Call VictorGreater London
