Garden Lighting Ideas — and the Wiring Rules That Make Them Safe
Great garden lighting is design plus electrics done properly. Here are the schemes that work — and the rules that keep them safe and legal.
Ideas that consistently work
The best garden lighting is layered and restrained — a few well-placed, warm, glare-free sources beat a runway of floodlights every time:
- Uplighting trees — one or two ground-spiked uplighters on a mature tree create more atmosphere than a dozen fence lights
- Path and step lighting — low-level markers for safe navigation, not illumination; steps should always be lit for safety
- Wall washing — grazing light up brick or render adds depth and makes the garden feel bigger from indoors
- Dining and seating zones — warm, dimmable light at low mounting heights; festoons on a properly installed outdoor circuit rather than trailing extension leads
- Security layer — PIR floodlights at access points, on their own switching so they don't ruin the ambience the rest of the time
- Smart control — outdoor zones on sunset schedules and scenes alongside your indoor smart lighting
The rules: IP ratings, RCDs and cable
Everything outdoors must be built for weather and protected against shock. The three technical essentials: fittings rated at least IP44 for general outdoor use (IP65+ for exposed or ground-level positions, IP68 submerged in ponds); every outdoor circuit protected by a 30mA RCD; and cabling that's designed for the environment — SWA (steel wire armoured) cable for buried runs, at proper depth with warning tape, or surface runs clipped and protected. Ordinary indoor flex draped over a fence is how gardens catch fire and RCDs earn their keep.
Garden buildings raise the stakes: a shed, studio or garden office fed from the house needs its own properly designed sub-main — usually SWA to a small consumer unit in the building — not an extension lead through a window.
Is garden lighting notifiable under Part P?
Often, yes. Any new outdoor circuit — new garden lighting circuits, outdoor sockets on their own way, power to outbuildings — is notifiable under Part P and must be certified. Extending an existing circuit slightly (adding a light to an existing outdoor circuit) generally isn't notifiable, but still has to meet BS 7671.
Practically, this means garden lighting is best planned as one certified project: design the zones, bury the cable runs once (ideally before landscaping — coordinate with your landscaper), and leave capacity for the things you'll add later, like a hot tub or EV charger.
Planning it properly
Our advice on every garden project: run more cable than you need today, put outdoor zones on their own circuits with outdoor-rated switching indoors, choose warm colour temperatures (2700K) and shielded fittings to keep glare and light pollution down — your neighbours and local wildlife will thank you.
We design and install garden lighting, outdoor power and outbuilding supplies across London and Kent, all certified — see our lighting installation service or call 07535 810812.
Frequently Asked Questions
Can I use solar lights instead of wired garden lighting?
Solar is fine for low-level marker lighting, but UK winters leave most solar fittings dim or dead exactly when evenings are longest. For lighting you can rely on — steps, dining areas, security — wired circuits win comfortably.
What IP rating do outdoor lights need?
IP44 is the general minimum outdoors; use IP65 or higher for exposed positions, ground-level and driveway fittings; IP68 for anything submerged. The IP rating must suit the position, not just say 'outdoor' on the box.
Do garden lights need their own circuit?
Small additions can extend an existing suitable circuit, but a dedicated outdoor circuit with 30mA RCD protection is best practice — it isolates faults (a waterlogged fitting won't black out the house) and any new circuit is certified under Part P as part of the job.
Talk to a NAPIT-Registered Electrician
Call 07535 810812 or WhatsApp us — free quotes, honest advice, and certified work across London & Kent.