Car anti theft system UK — physical protection

Relay attacks. CAN injection. OBD key cloning. Three methods, one answer: a physical relay that interrupts the engine circuit regardless of what signal is presented.

UK manufactured · 12/24V · Professional installation UK-wide

The most effective car anti theft system in 2026 is not the most expensive one — it’s the one with the right architecture. Physical relay interruption stops modern attacks that CAN bus systems, factory immobilisers, and tracking-only solutions cannot prevent.

20Arelay rating — interrupts fuel pump circuit completely

Zeroelectronic bypass possible — relay is a mechanical switch

Allvehicles — cars, vans, EVs, HGVs, motorhomes, 12/24V

Anti theft layers — what each product adds

Layer	What it does	LockCar product
Relay immobiliser	Physically prevents engine start — stops relay attacks and CAN injection	IC3ST, IS357, IS326
GPS tracking	Real-time location — enables recovery if vehicle moves	ONE Plus
4G live camera	Visual evidence and live view — confirm theft in progress remotely	ONE, ONE Plus, DUO
Remote immobilisation	Stop the engine from your phone if the vehicle is moved	ONE Plus
Auto night arming	Immobilised automatically every evening — no user action required	ONE Plus
Motion alerts	Notified immediately if the vehicle is disturbed	IC3ST, IS357, ONE Plus

Car anti theft systems — UK made, UK installed

LockCar anti theft systems from £139

Physical relay. GPS. 4G camera. Remote control. All available as standalone products or combined in the ONE Plus.

See all products → Free recommendation

From £139product only