You can use a SAD lamp at work in most UK offices: put it on your desk for the first hour of the day, angle the panel towards your face and away from colleagues, and run a 20–30 minute session while you clear your inbox. You need a mains socket and a little desk space. From November to January many people in the UK arrive at work before sunrise, so the office is often where the first bright light of the day has to happen.
At DAYARC, a new UK startup built around circadian rhythm, we make two bright-light lamps, and the smaller one is made for smaller spaces and mornings away from home. This guide is about shared workplaces, hot desks and hybrid weeks; our separate work-from-home desk guide covers the home office.
Why use a SAD lamp at work rather than at home?
Because that is where you are when the light matters. From late December to early January sunrise is 08:06 in London, 08:25 in Manchester and 08:44 in Edinburgh. If you are at your desk for 8.30am or 9am, you left home in the dark, and the office lights are the brightest thing you will see until lunchtime.
Lux is the unit for how much light lands on a surface. A bright office is around 300–500 lux, an overcast winter day outdoors is roughly 1,000–5,000 lux, and a SAD lamp delivers its rated 10,000 lux only at its stated distance. Bright light soon after waking tends to nudge the body clock earlier, which is why morning is the commonly recommended time. For a commuter, the first hour at the desk is often the first practical chance to get it.
How do you use a SAD lamp at work without annoying colleagues?
A few habits keep a lamp unobtrusive.
- Ask if you are unsure. A word with your manager or facilities team usually settles it.
- Use it early. The first hour of the day, while you clear email, is the session. Later in the day it is less useful to your body clock and more noticeable to the person opposite.
- Angle it towards you. Panel level with or slightly above your eyes, a little to one side, tilted so the light falls on your face rather than across the desk. Colleagues should see the edge or the back of the panel, not the front.
- Turn it down on a shared desk. DAYARC Rise has four brightness settings. If full output draws comments, a lower setting for the first few mornings is a fair compromise while people get used to it.
- Keep the cable tidy. Both DAYARC lamps are mains powered with no battery, so route the lead under the desk rather than across a walkway.
- Pack it away. On a hot desk, a lamp that folds into its own cover leaves nothing behind for the next person.
Which lamp suits an office desk, a hot desk or a bag?
Both lamps are rated at 10,000 lux, at different distances.
| For the office | DAYARC Rise | DAYARC Mini |
|---|---|---|
| Price | £199 | £49.99 |
| Rated output | 10,000 lux at approximately 30–36 cm | 10,000 lux at approximately 25 cm |
| Panel | Roughly 40 × 33 cm | Roughly 23 × 13 cm |
| Weight | Roughly 3.4 kg | Roughly 0.7 kg |
| Brightness | Four settings | One setting |
| Timer | 15, 30, 45 or 60 minutes, auto-off | None: use your phone |
| Colour temperature | 4,000 K white | 3,000 K warm-white |
| Stand | Adjustable height and angle | Folding stand that doubles as a cover; portrait or landscape |
| Suits | A desk that is yours | Hot desks, lockers, a laptop bag |
If the desk is yours, Rise is the easier lamp to live with: set the height and angle once, choose a timer length, and it switches itself off. At roughly 3.4 kg it stays where you put it. If you hot-desk or carry your kit, Mini earns its place at roughly 0.7 kg, with a hard-plastic stand that closes over the panel in a bag. The trade-off is distance: you sit about 25 cm from it and keep your head roughly in place, which suits email better than two screens. Inside the DAYARC Mini goes through every specification.
How does a SAD lamp fit a hybrid week?
Consistency matters more than location, so aim for a session on every working morning wherever you are. Three patterns work.
- Carry one lamp. Mini folds into its cover and goes in a laptop bag, home to office and back.
- Keep one at each end. Rise at the kitchen table, Mini in a desk drawer or locker at work. At £49.99 a second lamp is a modest addition, and nothing travels.
- Put the lamp where the dark is. If home mornings have daylight and office mornings do not, the full-size lamp may belong at work.
Shift workers have a different timing question, covered in light therapy for shift workers.
Can you ask your employer for a SAD lamp?
You can ask. Some UK employers support wellbeing requests through a line manager, HR, occupational health or a wellbeing budget; others have no policy at all, and there is no single rule. Keep the request low-key and factual: a mains-powered, UV-free bright-light lamp, used for 20–30 minutes in the first hour of the day, angled away from colleagues. If you have a diagnosed condition, occupational health may be able to advise, and that is a conversation about your health rather than about a lamp.
What else helps on a dark working day?
The NHS advice on SAD includes getting as much natural daylight as you can, keeping a regular sleep pattern and keeping up your usual activities. In an office that means a seat near a window if you can get one, and a walk at lunchtime, when daylight is at its strongest. The NHS says a brisk 10-minute daily walk counts towards the recommended 150 minutes of weekly activity; brisk means about 3 miles an hour, quick enough that you can talk but not sing.
Mind lists light therapy among the approaches people try for SAD and suggests discussing a light box with your doctor, particularly if you have an eye condition or take medicines that increase light sensitivity. Our guide to how long to use a light therapy lamp covers session length.
Frequently asked questions
Can I use a SAD lamp in an open-plan office?
Usually, yes. Angle the panel towards your face and away from the desks around you, use it in the first hour, and check with your manager or facilities team if you are unsure. It needs a mains socket.
Will a SAD lamp annoy my colleagues?
Less than you might think. A diffused LED panel gives a steady, even light, and from the side or behind it looks like a bright desk lamp. The person directly opposite is the one to think about, which is why angle and timing matter.
Can I ask my employer for a SAD lamp in the UK?
You can ask, and some employers will say yes through a wellbeing budget or occupational health. Policies vary from one workplace to another, so frame it as a simple, low-cost request.
How long should I use a SAD lamp at my desk?
A 20–30 minute session at the rated distance, in the first hour of the day, is the usual starting point. Rise has a built-in timer with auto-off; with Mini, set an alarm on your phone.
Where does this leave you?
If you have a desk of your own, look at DAYARC Rise and leave it set up. If you hot-desk, split the week between home and office, or want a lamp that lives in a bag, look at DAYARC Mini. The choose your light page sets the two side by side, and both are in stock in the UK, dispatched within 2 working days.
About DAYARC
DAYARC is a new UK circadian rhythm startup. We make two bright-light lamps for the morning: DAYARC Rise (£199), a full-size lamp rated at 10,000 lux at approximately 30–36 cm, with four brightness settings, a 15 to 60-minute timer and adjustable height and angle; and DAYARC Mini (£49.99), a compact lamp rated at 10,000 lux at approximately 25 cm, with a folding stand that doubles as its cover. Both use UV-free LEDs and run from the mains. We publish plain specifications with the measuring distance, we do not make medical claims, and we write the DAYARC Journal to help people build a simple morning light routine around their own daily rhythm. Both lamps are in stock in the UK and dispatched within 2 working days. You can read more about how we think on our approach page or compare the two lamps.
This article is general information, not medical advice. Check with a GP or qualified healthcare professional before using bright light if you have an eye condition, a condition affected by bright light such as bipolar disorder, or take medicines that increase your sensitivity to light. If you have persistent low mood or think you may have depression, speak to your GP. If you need urgent help, contact NHS 111, or call 999 in an emergency.