Polarised vs Non-Polarised Sunglasses: Which Do You Actually Need?
Polarised lenses cut glare bouncing off flat surfaces like water, roads and car bonnets, which makes them brilliant for driving, the beach and anything near water. Non-polarised lenses don’t do that, but they let you read your phone and dashboard without a fight, and they’re usually kinder on the wallet. Neither has anything to do with how much your eyes are protected from the sun (more on that surprise below, as it catches almost everyone out). So the honest answer to “which do you need” is: it depends entirely on where you wear them, and most of us could happily own one of each. The detail below sorts out which camp you fall into.
First, what "polarised" actually means
When sunlight bounces off a flat surface such as a lake, a wet road or the bonnet of the car in front, it gets scattered into a concentrated horizontal band of light. That’s glare, and it’s the reason you find yourself squinting on the motorway even with sunglasses on. A polarised lens has a built-in filter that blocks that horizontal band, so the glare simply… goes away. The first time you put on a good polarised pair near water it’s genuinely a bit magic, you can suddenly see into the sea rather than at it.
Non-polarised lenses just dim everything evenly, like turning the world’s brightness down a notch. They reduce overall light, which is comfortable and protective, but they don’t single out glare for special treatment.
The myth worth busting: polarisation is not UV protection
This is the one that catches everyone. Polarisation and UV protection are two completely separate things. A lens can be polarised with poor UV filtering, or non-polarised with full 100% UV protection. They are not the same feature, and a dark or polarised lens tells you nothing about whether your eyes are actually safe.
UV protection is the non-negotiable bit, it’s what protects your eyes from genuine long-term damage, so whichever camp you land in, check for 100% UVA/UVB or a UV400 rating first and treat polarisation as the separate, nice-to-have question it is. (All of ours have the UV side handled as standard, so you only need to think about polarisation v non-polarisation!)
When polarised wins
Reach for polarised if your days involve a lot of glare bouncing off flat surfaces:
Driving. Glare off wet roads and other cars’ bonnets is exactly what polarisation kills, and the reduction in squinting is a real comfort on a long motorway run.
Anything near water. Beach days, sailing, paddleboarding, sitting by a pool pretending to read. Water is the worst glare offender there is, and polarised lenses tame it completely (and yes, you’ll finally see the fish if the water’s clear enough).
Snow and bright open spaces. Sun bouncing off snow, sand or a pale patio throws a lot of glare, and polarised lenses make a noticeably calmer view.
Fishing, specifically. Anglers swear by them, because cutting the surface glare lets you see beneath the water. If that’s your weekend, the choice makes itself.
If you spend most of your sunny hours outdoors and near reflective surfaces, polarised is worth every penny.
Which of ours are polarised?
Most of them, as it happens. The following come with polarised lenses as standard — no add-on, no extra cost, it’s simply how they’re made:
- Ciren — Black, Tortoise, Smoke, Champagne and Autumn
- Southwark — Black, Tortoise and Smoke
- Walbrook — Black and Rum
- Richmond — Black, Smoke, Tortoise and Latte
- Farringdon — Black, Tortoise and Smoke
- Chiltern — Gold, Silver and Chrome
- Temple — Black, Tortoise and Pony
- Miami — Black and Tortoise
- Acadia — Black and Tortoise
- Georgica — Black and Tortoise
Everything else in the collection is non-polarised, which as the next section explains is genuinely the better choice for some people and not a lesser one.
One important note for prescription wearers. The above applies to our non-prescription sunglasses. If you’re ordering with a prescription, the lenses come non-polarised as standard, and polarised is available as a paid add-on you select at checkout. So if you’re a prescription customer who wants the glare-cutting, do remember to tick the option — it’s an easy one to sail past, and it’s the difference between the two experiences described in this article.
When non-polarised is actually the better choice
Here’s the part the glossy adverts skip: polarised isn’t automatically "better," and in a few situations it’s a genuine nuisance.
Looking at screens. Polarised lenses can interfere with LCD and LED displays, your phone, the car’s digital dashboard, an ATM, a petrol pump display, sometimes turning them dark, dim or oddly rainbow-streaked depending on the angle you tilt your head. If you’re forever checking your phone in the sun (no judgement, same), non-polarised saves you the head-tilting effort.
Pilots and some drivers. Anyone reading cockpit instruments or certain in-car screens is often advised against polarised for exactly that reason. Worth knowing before you commit.
A pure style pair. If your sunglasses are mostly for looking the part on the walk to lunch rather than for staring at the sea, you may simply not need polarisation and non-polarised opens up lens tints and finishes that polarised lenses don’t come in. Our Keel, with its flat-top black frame and citrus-orange lens, is a case in point — a pair you’d wear for the look and the light rather than for cutting glare off a lake.
So, which do you actually need?
Left: Keel. Right: Georgica Tortoise. Non-polarised and polarised, side by side.
If you drive a lot, live near water, or spend long days outdoors in bright open spaces, go polarised: the comfort is real and you’ll notice it daily. Most of our range has you covered there, so it’s a question of which shape you fancy rather than which spec. If you’re mostly in the city, glued to your phone, or you think of sunglasses as the finishing touch to an outfit, non-polarised is perfectly judged and not remotely a compromise.
And if you’re anything like us, the honest answer is one of each: a polarised pair for the beach and the long drive, and a non-polarised pair for everyday city wear and uninterrupted phone-scrolling. Whichever way you go, just make sure the UV protection box is ticked first — every pair we make is fully UV protected as standard, polarised or not. That’s the part that actually matters for your eyes; the rest is about where life takes you.
Frequently asked questions
What is the difference between polarised and non-polarised sunglasses?
Polarised sunglasses have a filter that blocks glare reflecting off flat surfaces like water, roads and snow, giving a clearer, more comfortable view in bright conditions. Non-polarised sunglasses simply reduce overall brightness evenly without targeting glare. Both can offer full UV protection; polarisation is a separate feature about glare, not sun safety.
Do I need polarised sunglasses?
You’ll benefit most from polarised lenses if you drive often, spend time near water, ski, or fish, because those activities involve a lot of surface glare. If you’re mainly in the city, frequently look at phone or dashboard screens, or want sunglasses chiefly for style, non-polarised is usually the better and more affordable choice in many cases.
Are polarised sunglasses better than non-polarised?
Not automatically. Polarised lenses are better at cutting glare and are ideal outdoors near reflective surfaces, but they can make phone and dashboard screens hard to read and cost a little more. Non-polarised lenses are more screen-friendly and versatile for everyday wear. The right choice depends on how and where you use them.
Do polarised sunglasses offer more UV protection?
No. Polarisation and UV protection are completely separate. A polarised lens is not automatically better at blocking UV, and a non-polarised lens can offer full protection. Always check for 100% UVA/UVB or a UV400 rating regardless of whether the lens is polarised.
Why do polarised lenses make screens look strange?
Many digital screens emit light in a particular orientation, and a polarised filter can block or distort it, making the screen look dark, dim or rainbow-tinted depending on the angle. This is why pilots and some drivers are advised to avoid polarised lenses when reading instrument displays.
Which Greenwich Social Club sunglasses are polarised?
Ciren (Black, Tortoise, Smoke, Champagne, Autumn), Southwark (Black, Tortoise, Smoke), Walbrook (Black, Rum), Richmond (Black, Smoke, Tortoise, Latte), Farringdon (Black, Tortoise, Smoke), Chiltern (Gold, Silver, Chrome), Temple (Black, Tortoise, Pony), Miami (Black, Tortoise), Acadia (Black, Tortoise) and Georgica (Black, Tortoise) all come with polarised lenses as standard. The remaining frames and colourways are non-polarised. Every pair, polarised or not, has full UV protection.
Do prescription sunglasses come polarised?
Not by default. Our prescription lenses are non-polarised as standard, with polarisation available as a paid add-on selected at checkout. If you want the glare-cutting benefits on a prescription pair, make sure you tick that option when you order.
Can you wear polarised sunglasses for driving?
Yes, and many people prefer them for driving because they cut glare off wet roads and other vehicles. The one caveat is that they can make some digital dashboard displays harder to read, so it’s worth checking how your car’s screens look through a polarised lens before relying on them.