The best bathroom lighting layers three things: bright, even light for washing and shaving, a dedicated light either side of (or above) the mirror for grooming, and one softer, warmer source for evenings. Every fitting has to suit the zone it sits in under BS 7671, low voltage and IPX7 inside the bath or shower, at least IPX4 (commonly sold as IP44) above it and around the basin, and any new wiring is a job for a registered electrician, not a Saturday afternoon. Get the layers and the ratings right and everything else in this guide is just detail.
We have been selling lighting for 41 years, and the bathroom is the room people get wrong most confidently. Not through carelessness, through good taste applied to the wrong brief: a beautiful pendant that cannot legally hang where you want it, a single flush ceiling light doing three jobs at three different times of day, downlights bought by the box without anyone working out how many the room actually needs. This is the room-wide plan. Below it sit six detailed pieces on the parts that deserve their own space, mirror lighting, small bathrooms, downlight spacing, extractor combos, LED strips and pendants, plus our existing guide on zones and IP ratings. Read this one first, then go deep wherever your bathroom needs it.
Planning a bathroom lighting scheme: the three layers
A bathroom needs the same layered thinking as any other room, ambient, task and accent, just compressed into a smaller space and constrained by water. Skip a layer and the room either feels clinical or leaves you shaving in your own shadow.
- Ambient. The general light that fills the room, usually a central flush or semi-flush fitting, or a run of downlights. This is what you switch on to get in and out of the room safely.
- Task. Focused light where you actually do things, above all at the mirror, where flat, shadow-free light either side of your face matters more than any other fitting in the room.
- Accent. The layer everyone forgets and the one that turns a bathroom into something you enjoy being in, a warm LED strip under a vanity unit or along a shelf, dimmed low for an evening bath.
Our house opinion: most bathrooms are lit for the ambient layer alone, one central fitting, on or off, nothing else. That gets you a room that works at seven in the morning and feels like a service station the rest of the time. Three switches, or one dimmable circuit and one accent circuit, cost very little extra to wire in and change how the room feels. Start with the KES bathroom lighting range, filtered to fittings rated for wherever you are lighting, and build the scheme layer by layer rather than fitting by fitting.
Bathroom lighting zones and IP ratings, briefly
UK bathrooms are split into zones under BS 7671, and every fitting you choose has to be rated for the zone it goes in. In plain terms, Zone 0 is inside the bath or shower itself, low voltage only and rated IPX7, fully submersible. Zone 1 is the space above the bath or shower up to 2.25m from the floor, minimum IPX4 (commonly sold as IP44). Zone 2 covers 0.6m beyond Zone 1, and the space around a basin within 60cm, also minimum IPX4. Outside those zones, a standard indoor-rated fitting is fine.
Any new wiring or circuit work in a bathroom is notifiable under Part P of the Building Regulations, and it should be done, or at least signed off, by a qualified, registered electrician. Not a corner worth cutting. For the full zone-by-zone breakdown and worked examples, our dedicated guide on bathroom lighting zones and IP ratings covers it properly. Read that one before you buy anything for inside or above a bath or shower.
Mirror and vanity lighting: the layer that actually matters most
If a client only had budget for one good bathroom light, we would spend it here. Overhead light alone throws a shadow straight down your face while you shave or do your make-up, which is precisely the moment you most need to see clearly. Light either side of the mirror at roughly face height, or a well-chosen illuminated mirror, solves it properly. Go a touch cooler and cleaner than the rest of the room, around 3500K to 4000K with a high CRI, so colours read true rather than flattering-but-wrong.
This is worth getting right because it is the fitting you stand closest to and use most deliberately. Our full mirror and vanity lighting guide covers wall light placement, illuminated mirrors, and shaver sockets in detail at bathroom mirror and vanity lighting. Browse IP-rated wall lights suitable for either side of a mirror in the KES bathroom wall lights range.
Small and windowless bathrooms
A small or windowless bathroom (an ensuite, a downstairs cloakroom, a shower room under the stairs) has the opposite problem to a large family bathroom. There is nowhere to hide a bad decision, and no daylight to soften one. A single flush light and nothing else is the most common failure we see here, it flattens the whole room and makes a small space feel smaller.
The fix is usually restraint done well rather than more fittings, warm, well-placed light, a mirror light that earns its keep, and colour choices that do not fight the lighting. Our dedicated piece on small bathroom lighting ideas works through layout, fitting choice and the specific tricks for a room with no window.
Downlights: how many, and how far apart
Downlights are the default ambient layer in most modern bathrooms, and for good reason, they are unobtrusive, work well in low ceilings, and give even general light. The mistake is guessing the number. Too few and the room has dark corners, too many and you have paid for light nobody needed and created a room with no shadow or softness left in it at all.
Spacing depends on ceiling height, beam angle and the fittings' output, worth getting precisely right rather than guessed. Our full downlight guide, how many downlights does a bathroom need, works through the spacing rule and worked examples for typical room sizes. If you are fitting downlights inside Zone 1 or Zone 2, the zone rule above still applies, check the IP rating before you buy. Shop the current range in KES recessed bathroom downlights.
Extractor fan and light combination units
A combined extractor fan and light earns its place in a small bathroom or an ensuite with limited ceiling space, one fitting doing two jobs, one hole in the ceiling instead of two. They are not automatically the right choice for every room though, and the light output on some combo units is a genuine compromise against a dedicated fitting. We would rather you choose deliberately than default to a combo because it is what was already there.
Our guide on extractor fan and light combination units sets out when a combo genuinely earns its place and when you are better off with the fan and the light kept separate.
LED strip and mood lighting
This is the layer that turns a bathroom from purely functional into somewhere you actually want to spend twenty minutes with a bath and a book. A warm LED strip under a floating vanity, along a recessed shelf, or behind a mirror gives the room a soft, low-level glow for evenings without switching on the main light at all. It also happens to be one of the cheapest upgrades in this whole guide relative to the difference it makes.
Strip lighting still has to respect the zone it sits in, low-voltage strips run from a suitably rated transformer are the standard route in or near a wet zone. Our dedicated guide on LED strip and mood lighting for bathrooms covers placement, control and which strips suit which zone.
Pendant lights in a bathroom: yes, sometimes
People assume pendants are banned from bathrooms outright. They are not, they are zone-restricted like everything else, and in a bathroom with a reasonably high ceiling and space outside Zones 0 to 2, a pendant can be a genuinely lovely centrepiece rather than a rule you are not allowed to break. What you cannot do is hang a decorative, non-rated pendant directly over a bath or shower and hope for the best.
Our full answer on where a pendant can and cannot go, and what rating it needs if it is anywhere near a zone, is in can you have pendant lights in a bathroom. Worth reading before you fall for one online.
Colour temperature for bathrooms
As a general rule, keep the ambient layer warm, 2700K to 3000K, so the room feels calm rather than clinical, and go slightly cooler at the mirror, 3500K to 4000K with a high CRI, so you can actually trust what you see when you shave, apply make-up or check a spot that has been bothering you for a week. Daylight-white bulbs (5000K and up) across a whole bathroom are the fastest way to make an expensive tiling job look like a hospital corridor. We would not do it, and we would talk you out of it if you asked us to spec it.
Quick reference: what goes where
| Zone | Where it is | Minimum rating | Typical fittings |
|---|---|---|---|
| Zone 0 | Inside the bath or shower | IPX7, low voltage only | Fully submersible fittings only, rarely lit directly |
| Zone 1 | Above the bath or shower, up to 2.25m | IPX4 (IP44) | Rated downlights, shower lights |
| Zone 2 | 0.6m beyond Zone 1, and around the basin | IPX4 (IP44) | Rated wall lights, mirror lights, downlights |
| Outside zones | The rest of the room | Standard indoor rated | Pendants, flush and semi-flush fittings, decorative wall lights |
Full detail, worked examples and every edge case: bathroom lighting zones and IP ratings.
The short version
- Layer it: ambient for general light, task at the mirror, accent (an LED strip) for evenings. One central fitting is never the whole scheme.
- Match every fitting to its zone: IPX7 and low voltage inside the bath or shower, minimum IPX4 (IP44) above it and around the basin, standard indoor rated everywhere else.
- Any new bathroom wiring is notifiable under Part P. Use a registered electrician, always.
- Mirror lighting deserves its own budget line, light either side of your face, slightly cooler (3500K to 4000K) and high CRI.
- Warm ambient light (2700K to 3000K) everywhere else. Save daylight-white for the mirror, not the whole room.
Once the zones and the layers are clear, the enjoyable part is choosing the fittings. Browse the full range in KES bathroom lighting, or start with the layer currently missing from your room, IP-rated flush fittings in bathroom flush ceiling lights, or a dedicated mirror light in bathroom wall lights.
Frequently asked questions
What are common bathroom lighting mistakes?
The one we see most often is a single central flush light doing every job, ambient, task and accent, at every time of day. Close behind it: no dedicated light at the mirror, so you shave or do your make-up in your own shadow, downlights spaced by guesswork rather than worked out from ceiling height and beam angle, and mixing colour temperatures so half the room reads warm and half reads cold. The one mistake that is also a safety issue rather than just a style one is hanging a decorative, unrated fitting over or near a bath or shower, always check the zone before you buy.
Are LED lights good for bathrooms?
Yes, and for a wet, enclosed room there is not much of a case for anything else now. LED runs cool, which matters in a small, steamy space, uses a fraction of the electricity of the halogen it replaced, lasts for years rather than months, and comes in properly IP-rated versions for every zone, including IPX7 fittings for inside the shower and low-voltage strip for accent lighting. What actually needs thought is colour temperature and CRI, not whether to choose LED in the first place.
How do you choose a bathroom light fixture?
Work in this order, not the order most people shop in. Start with the zone the fitting is going in, that rules out anything unrated before style even enters the conversation. Then decide which layer it is serving, ambient, task or accent, a fitting bought to do all three usually does none of them well. IP rating and zone compliance come first, colour temperature next, finish and style last.
What is the best type of ceiling light in a bathroom?
There is no single best, it depends on the room. Downlights suit low ceilings and give even general light with no visual clutter. A flush or semi-flush fitting is a straightforward central ambient light for most standard bathrooms. A pendant earns its place where there is real ceiling height and space outside the wet zones. The fitting type matters less than choosing one rated for the zone it actually sits in.
What is the trend in bathroom lighting?
The clearest shift in what we are asked for is away from one central light and towards layered, dimmable schemes, warm ambient light, cooler task light at the mirror, and a low, warm accent layer such as an LED strip for evenings. Illuminated mirrors and a separate dimmable circuit are the two upgrades people ask about most now. A daylight-white, all-white scheme across the whole room is going firmly out of fashion, it reads clinical rather than considered.
Words by Anne McKenna, KES Lighting & Home. Last updated 21 July 2026.
