Squat, reach, sit. That is my changing-room test, and it has saved me from more bad leggings than any review.
If the waistband rolls or the fabric goes sheer, you have learned something useful before paying. The best activewear brands earn their place in your drawer by feeling good through a whole workout, not by looking lovely on the hanger.
Which activewear brands are actually worth your money?
There are plenty of UK labels competing for you in 2026, and I have narrowed them to 12 with different strengths. Shop for the routine you really have, not the fantasy one. Fit varies between brands, so think about waistband height, compression and fabric feel before you fall for a colour. Check each retailer’s current size guide and return policy too, especially with a label you have not tried.
Sweaty Betty is a familiar UK favourite, with leggings and layers that often lean colourful and flattering. Its Power leggings are a good starting point if you like a supportive feel, though firmer compression won’t suit everyone. Lululemon is known for careful construction and a broad range of leggings, tops and studio layers. The price can sting, and popular colours may sell out quickly.
Gymshark keeps its focus on training, with leggings and matching sets that feel gym-ready without a luxury price tag. The styles can be quite sculpted, so check the cut if you prefer a relaxed fit. Tala goes softer and more pared-back, with sustainability at the centre of its story. If you live for brights, the understated palette may leave you cold.
Adidas and Nike cover training, running and everyday wear. Basics are easy to find. The catch is that fit and fabric feel differ quite a bit between collections, so try pieces on when you can.
Cheap, cheerful and still decent
Good kit doesn’t need a premium label. M&S Activewear does leggings, sports bras and easy layers that suit low-key gym sessions or a brisk walk, and the simple styling mixes well with what you own. Decathlon is another practical stop, especially for activity-specific gear. It looks more functional than fashionable, and I think that is fine. (I once bought a rain layer there that outlasted two pricier ones, though that is just one jacket.)
Primark makes budget pieces easy to grab in store, though fabric feel and durability vary by item. H&M Move sits between everyday basics and trend-led gymwear, with plenty of colour and shape options. Adidas and Nike frequently cover the middle ground, above those basics but below the premium names.
How often will you wear it?
That question matters more than the logo. Leggings for three strength sessions a week may justify a tougher, more supportive fabric. A top for occasional stretching? Go cheaper. Don’t pay extra for a badge if the waistband doesn’t work for you.
Fabletics uses frequent drops and membership offers, and Varley takes a fashion-first approach to studio-to-street dressing. With any offer-led model, read the terms before signing up. A matching set is a great distraction from small print, so slow down.
Sweaty Betty vs Lululemon, and other face-offs
Sweaty Betty vs Lululemon comes down to the feel and finish you like. Sweaty Betty has a distinctly British, energetic style, with prints and colour next to its familiar leggings and training layers. Lululemon keeps a cleaner look, with a wide spread of studio staples and technical-feeling fabrics. Both are premium purchases. Try the waistband, and look at the fabric in daylight if you can, because a dim fitting-room mirror hides a lot. Actually, that is the single most overlooked step I see people skip, and it costs them the most in returns.
Varley is a different kind of premium. Its pieces blur the line between workout kit and relaxed everyday clothing, which suits a neat fleece or a refined set for coffee after Pilates. Some styles are more lounge-friendly than built for high impact, so read the product details instead of assuming every pretty set can handle a run.
Gymshark vs Tala is a useful contrast as well. Gymshark is built around the gym, with a confident, sculpted look and lots of matching options. Tala leans into understated shapes. Want a bold training set? Gymshark may click. Prefer quieter styling? Tala is probably closer. Neither suits every body or workout, so use size charts and customer reviews as a second opinion.
Match the kit to the sweat
Your workout should steer the purchase more than a brand’s Instagram feed. For running, look at Nike, Adidas and Sweaty Betty for tights and tops designed around movement, and check pockets and reflective details if you head out early. For strength training, Gymshark and Lululemon offer plenty of close-fitting leggings, while Decathlon has budget-conscious options. For yoga or Pilates, Tala, Varley and Lululemon have soft studio styles that also work for a quiet day at home.
Sports bras need a reality check of their own. A low-impact bra feels lovely in a stretch class and gives too little hold for a run. Match support to activity, then check the band sits firmly without digging in. Between sizes? The brand’s size guide beats any generic rule.
For commuting, warm-ups or damp UK afternoons, a zip-up layer earns its space fast. M&S and H&M Move are handy for easy everyday layers, while Varley and Sweaty Betty offer more polished finishes. One gripe: some athleisure layers look cosy online but run warm once you start moving, so think about whether you’ll wear yours before or after exercise.
No single brand wins across all 12. Start with the workout you do most, decide how much support you need, then pick a price that feels fair for how often the piece will leave the drawer. My own pick would be one premium pair of leggings you love and a stack of cheap tops, because that is where the money works hardest.
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Frequently Asked Questions
Which activewear brand is best for squat-proof leggings?
Gymshark and Lululemon both offer plenty of close-fitting, supportive leggings. Check the fabric in daylight and do a squat in the changing room before you commit.
Is Sweaty Betty worth the money compared with Lululemon?
Both are premium. Sweaty Betty leans colourful and British in style, while Lululemon is cleaner and more pared-back. Try the waistband on and pick the feel you prefer.
What are the best budget activewear brands in the UK?
M&S Activewear, Decathlon, Primark and H&M Move all cover lower price points. Fabric feel and durability vary by item, so check reviews.
How do I choose a sports bra?
Match the support level to your activity. A low-impact bra suits stretching but not running. The band should sit firmly without digging in.
