Best binoculars under £100 for birdwatching
Six cheap pairs that still work in British weather, all checked on Amazon UK this month.
Last updated: October 2026
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How we choose: we have not tested these by hand. Picks come from makers' published specs, independent reviews and what UK birders actually carry. Every pick was checked on Amazon UK on 22 October 2026. Prices move, so check on the day.
Quick picks
Celestron Outland X 8x42 Our pickBest under £100Check priceOpticron Adventurer T WP 8x42Best porro prismCheck priceOpticron Adventurer II 8x32Lightest, best with glassesCheck priceHawke Nature-Trek 8x25Best compactCheck price.jpg/500px-Birdwatching_with_grandpa_Claytor_Lake_State_Park_Virginia_(16589750059).jpg)
Binoculars under £100 compared
Specs are the makers' published figures. Field of view is metres wide at 1,000m. Prices are Amazon UK on 22 October 2026. On a phone, scroll the table sideways.
| Model | Spec | Prism | Weight | Close focus | Field of view | Eye relief | Waterproof | Price |
|---|---|---|---|---|---|---|---|---|
| Celestron Outland X | 8x42 | Roof | 600g | 4.5m | 119m | 18mm | Yes, nitrogen | Around £85 |
| Opticron Adventurer T WP | 8x42 | Porro | 625g | 5m | 131m | 18mm | Yes | Around £78 |
| Opticron Adventurer II WP PC | 8x32 | Roof | 507g | 5m | 108m | 20mm | Yes, nitrogen | Around £99 |
| OM System 8x40 S | 8x40 | Porro | 710g | Not stated | 143m | 12mm | No | Around £72 |
| Hawke Nature-Trek | 8x25 | Roof | 295g | 2m | 119m | 13mm | Yes, nitrogen | Around £94 |
| Celestron Outland X | 8x25 | Roof | 300g | 4m | Not stated | 10mm | Water-resistant | Around £51 |
The six picks
Celestron Outland X 8x42Our pick
Around £85The one to buy if you have £100 and want one pair for everything. Sealed and nitrogen filled, so it will not fog inside on a cold morning. BaK-4 prisms, multi-coated lenses and 18mm of eye relief, which is enough for most glasses. Sold and shipped by Amazon at the time of checking.
Opticron Adventurer T WP 8x42
Around £78A porro prism pair from a British optics firm. Porros give a lot of image for the money, so this is bright for the price and the view is wide at 131m. Waterproof, with 18mm eye relief. It is bulkier than a roof prism 8x42 and it is not nitrogen filled.
Opticron Adventurer II WP PC 8x32
Around £99The lightest full-size pair here at 507g, with 20mm of eye relief, the most in this list. Good for glasses wearers and for long walks. Independent testing found it a middle-ground performer with a narrower, dimmer view than the best 8x32s, which is fair at this price.
OM System 8x40 S
Around £72The widest view under £100 at 143m, so birds are easy to find. This is the old Olympus porro design. It is not sold as waterproof and the 12mm eye relief is short, so it suits dry-weather garden and park birding without glasses.
Hawke Nature-Trek 8x25
Around £94A proper compact for a coat pocket. Waterproof, nitrogen filled and 2m close focus, which is the best here for insects. At 295g you will take it on walks where an 8x42 stays at home. Like most compacts the image dims early at dusk.
Celestron Outland X 8x25
Around £51The cheapest pair we would buy. Small, light and water-resistant rather than waterproof. Fine for a child's first pair, a glovebox spare or a festival bag. Not a main pair for an adult birder.
Worth stretching to?
If you can find another £60 to £80, two 8x42s step up in focus and image. The Nikon Prostaff P3 8x42 (around £160) has 20.2mm eye relief, a 126m view and 3m close focus. The Hawke Nature-Trek 8x42 (around £169) has a 129m view and 2m close focus. Both are covered in our full binoculars guide.
What to look for under £100
- Waterproof first. British birding is wet. An unsealed pair fogs inside and is useless until it dries out.
- 8x, not 10x or 12x. At this price, 8x gives a brighter, steadier and wider view. Higher power shows shake more than detail.
- BaK-4 prisms and multi-coated lenses. All six picks list both or are porros from established makers.
- Eye relief of 16mm or more if you wear glasses. See our glasses guide.
- Avoid zoom binoculars and "HD night vision" listings. They are dim and hard to focus.
Not sure between 8x and 10x? Read 8x42 vs 10x42.
Frequently asked questions
Are binoculars under £100 good enough for birdwatching?
Yes. A waterproof 8x42 at around £80 to £100 will show you every common British bird well. You lose some sharpness at the edges, brightness at dusk and build quality against a £250 pair, but for a first pair it is enough.
What are the best binoculars under £100 in the UK?
Our pick is the Celestron Outland X 8x42, around £85 on Amazon UK when we checked in October 2026. It is waterproof, nitrogen filled and has 18mm eye relief. The Opticron Adventurer T WP 8x42 porro is a brighter, bulkier alternative at around £78.
Should I buy 8x42 or 10x42 binoculars on a budget?
Buy 8x42. Cheap optics show their weaknesses more at higher power, and 8x gives a wider, brighter and steadier view that makes birds easier to find. 10x makes sense later for estuaries and open country.
Are porro prism binoculars better than roof prism under £100?
Often, for image per pound. Porros are simpler to make well, so a cheap porro can be brighter and sharper than a cheap roof prism. Roof prisms are slimmer, lighter and easier to seal, which is why most birders end up with them.
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