Women's Activewear UK: 20 Best Brands, Shops & Deals 2025

Hunting for leggings that stay opaque through squats, a bra that survives hill sprints and the tumble-dryer, or simply a jogger set you can pop to Tesco in? Good news: every label on this list not only ships to — or is stocked right here in — the UK, but also carries fresh 2025 price tags, live discount tricks and size charts ready for quick checkout.

First, a quick primer: sportswear is engineered for peak performance (think compression panels and heat-mapped ventilation); activewear balances function with street-ready style for gym and school run alike. We’ve gathered both. Older gym-goers will also find moisture-wicking, modest-cut leggings and supportive footwear flagged throughout. Expect 2025’s hallmarks — buttery-soft recycled fabrics, colour-blocked 7⁄8 cuts, and pockets everywhere. To keep the list honest we scored each brand on quality, size inclusivity, price value, sustainability creds, style quotient and the deals you can grab right now. Ready to upgrade your kit?

1. Take a Hike UK

1. Take a Hike UK

Brand Snapshot & Aesthetic

Home-grown on the South Coast, Take a Hike UK bridges trail and treadmill: outdoor-grade jackets meet gym-ready leggings in one basket. Shoppers get free UK delivery over £50, 12/6 live chat and a 14-day money-back promise, making first-time orders painless.

Editor’s Picks for 2025

• Soft-Shell Trail Jacket – DWR water-repellent finish, stow-away hood, weighs 280 g.
• High-Rise Compression Leggings – recycled nylon, squat-proof, side pocket fits iPhone 15 Pro Max.
• Smart Hydration Sports Bra – removable cup, micro-pocket for keys plus 200 ml soft-flask slot.
  August Deals slash up to 30 % off the leggings line this month.

Sizes, Prices & Deals

Women’s sizes XS–XXL; hero pieces run £28–£89. Klarna and PayPal Pay-in-3 stretch the cost, while the “Best-sellers” carousel spotlights real-time favourites and new-season colour drops.

Sustainability & Pros/Cons

Recycled nylon panels and fully recyclable kraft mailers keep waste down.
Pros: one-stop shop for camping kit and women’s activewear UK shoppers love; standout customer support.
Cons: range smaller than legacy giants; cuts above XXL arrive later in 2025.

2. Gymshark

Brand Snapshot & Aesthetic

Born in Birmingham and now flexing worldwide, Gymshark pairs muscle-hugging seamless knits with punchy colour drops and “shark head” logos. TikTok-famous leggings plus roving “Gymshark Lifts” pop-ups keep the community sweating together.

Best Pieces to Buy in 2025

• Vital Seamless 3.0 Leggings – DRY Accel yarn keeps sweat patches off camera
• Elevate Sports Bra – moulded cups, racer-back mesh panel
• 5-inch Rest Day Shorts – peach-skin modal, pockets big enough for a 750 ml bottle

Size, Fit & Deals

Sizes XS–XXL, but compression is fierce; many shoppers size up. Gymshark Students get 10 % year-round, birthday emails drop another 10 %, and November flash events slice up to 50 % off site-wide.

Sustainability & Pros/Cons

“United We Sweat” takes back worn kit for recycling, and every 2025 mailer uses 100 % recycled LDPE.
Pros: catwalk colours, buttery seamless feel, viral community energy.
Cons: hot launches sell out in minutes, creating FOMO.

3. Sweaty Betty

Brand Snapshot & Aesthetic

Sweaty Betty, born in London and now 60 + UK stores strong, marries luxe hand-feel with yoga-to-run versatility. Expect figure-hugging seams, bold prints and fabrics that survive hot-studio washes without losing stretch.

Best Pieces to Buy in 2025

• Power Ultra High-Waisted Leggings – sculpting Italian knit, hidden phone pocket
• Explorer 2-in-1 Running Short – breathable liner, reflective trims
• Super Soft Pilates All-in-One – TENCEL™ modal, quick front zip

Size, Fit & Deals

Sizes XXS–XXL, with petite and tall inseams. Leggings land around £75–£115. Online “Spin the Wheel” vouchers and January or July warehouse sales can slash prices by up to 60 %.

Sustainability & Pros/Cons

72 % of the 2025 range uses recycled or responsibly sourced fibres, and the returns window is a generous 45 days.
Pros: inclusive styling, long-lasting quality.
Cons: premium pricing, especially if you want matching sets.

4. Oner Active

Oner Active channels gym confidence into sculpting sets that celebrate curves and reach UK doors within days.

Brand Snapshot & Aesthetic

Founded by London coach Krissy Cela, the label relies on seamless knits and contour shading for a body-positive look.

Best Pieces to Buy in 2025

• Classic Seamless V4 Leggings – four-way stretch, scrunch bum
• Allure Sports Bra – square neckline, adjustable straps
• Effortless Shorts 6-inch – laser-cut hem, no ride-up

Size, Fit & Deals

Sizes XS–XXXL with hip-friendly cuts; most stay true to size. Leggings £45–£60; loyalty tiers shave 5–15 %.

Sustainability & Pros/Cons

Compostable corn-starch mailers; recycled yarns roll out in 2026.
Pros: empowering branding, solid plus-size range.
Cons: drops sell out fast, fuelling resale mark-ups.

5. Fabletics

Brand Snapshot & Aesthetic

Fabletics runs on a subscription engine: join as a VIP and you unlock members-only prices that undercut most high-street rivals. Celebrity partnerships (co-founder Kate Hudson, Lizzo, Vanesa Bryant) pump out limited capsules in bold prints and buttery compressive knits — all dispatched from its UK warehouse with free returns.

Best Pieces to Buy in 2025

• Define Powerhold Legging – medium-compression, anti-roll waistband
• Cloud Seamless Set – feather-light marl fabric, tonal contouring
• Kate Hudson Capsule Jacket – recycled ripstop, packable hood

Size, Fit & Deals

Inclusive sizing XXS–4X; new VIPs snag two leggings for £24. Each month, a £54.95 credit auto-loads but you can “skip” by the 5th and pay nothing. Non-members pay roughly double.

Sustainability & Pros/Cons

“Eco-luxe” line spins recycled polyester and bio-based dyes.
Pros: huge size range, weekly flash sales.
Cons: subscription admin not ideal for casual shoppers.

6. AYBL

Brand Snapshot & Aesthetic

Worcestershire-based AYBL (say “able”) champions clean lines and performance fabrics without shouty logos. Think neutral palettes and seamless knits that keep up with burpees and barbell rows, not just brunch.

Best Pieces to Buy in 2025

• Balance V3 Leggings – seamless rib waist, fully squat-proof
• Core Shorts – 5-inch inseam, sweat-wick yarn
• Motion Zip Jacket – thumbholes, brushed inner for warm-ups

Size, Fit & Deals

Sizes XS–XXL; true fit with mild compression. Leggings sit at £28–£38 and often dip to £25 during rolling 20 % codes. A £10 outlet page hides last-season bargains.

Sustainability & Pros/Cons

The AYBL X Sustainable capsule uses 70 % recycled nylon and ships in recycled poly bags.
Pros: budget-friendly, squat-proof, UK dispatch.
Cons: sporadic restocks; limited colours beyond neutrals.

7. Bo+Tee

7. Bo+Tee

Brand Snapshot & Aesthetic

Sister label to Oh Polly, Bo+Tee serves fashion-first women’s activewear UK shoppers can actually sweat in: contour-knit leggings, cut-out bras and loungey cargos in every scroll-stopping shade. Rapid weekly drops and influencer shoots keep the feed—and your gym bag—fresh.

Best Pieces to Buy in 2025

• Contour Define Seamless Leggings – ribbed waistband, booty-lift shading
• Cut-Out Keyhole Bra – removable pads, halter neck, low-to-mid impact
• Lounge Cargo Joggers – oversized pockets, tapered ankle cuffs

Size, Fit & Deals

XXS–XL with a hug-your-hips cut; measure hip circumference before clicking “add to cart”. Student Beans unlocks 15 % off and the mid-June London sample sale drops sets to under £20.

Sustainability & Pros/Cons

Ships in recycled poly mailers; small recycled-nylon capsule launching Q4.
Pros: catwalk colours, perfectly matched sets.
Cons: limited plus sizes; some styles feel compressive after tumble-drying.

8. Lululemon

The label that turned leggings into a luxury item still reigns in 2025. With more than 15 UK stores plus brisk online shipping, hemming while-you-wait and hassle-free 30-day sweat tests, it’s the splurge most gym lovers justify.

Brand Snapshot & Aesthetic

Canadian born, Lululemon leans on tech fabrics like Nulu (buttery soft) and Nulux (weightless, cool). Minimal logos and neat pockets keep pieces studio-to-street ready.

Best Pieces to Buy in 2025

• Align High-Rise Pant 25″ – Nulu fabric; second-skin feel.
• SenseKnit Running Tight – zoned compression, reflective calves.
• Chargefeel 2 Trainer – dual-density midsole for HIIT and 5Ks.

Size, Fit & Deals

UK sizes 2–24; most items run true. Leggings cost £88–£128. Check the “We Made Too Much” page and ad-hoc 15 % student/NHS events for savings.

Sustainability & Pros/Cons

Targeting 100 % renewable energy by 2027; Like New resale programme live in London.
Pros: unrivalled fabric feel, free hemming, generous sweat-test returns.
Cons: high price tag; limited colour drops sell quickly.

9. Nike UK

Brand Snapshot & Aesthetic

Still the swoosh to beat: performance-first designs, inclusive campaigns and enough UK stockists to kit out every club run and five-a-side. 2025 drops riff on retro track palettes and body-map ventilation.

Best Pieces to Buy in 2025

• Zenvy InfinaSoft Leggings – cloud-touch fabric, squat-proof, hidden waistband pocket
• Dri-FIT One Classic Tee – recycled poly-cotton, anti-cling finish
• Motiva EasyOn Trainer – rocker sole for walk-run intervals, toggle laces

Size, Fit & Deals

Women’s XXS–4XL, plus maternity and tall lengths. Leggings start at £34. Nike Members enjoy free delivery, a birthday 25 % voucher and outlet extra 20 % during end-of-season events.

Sustainability & Pros/Cons

“Move to Zero” pushes recycled yarns; half of all 2025 garments contain at least 50 % recycled content.
Pros: sport-specific ranges from netball to weightlifting, deep colour options.
Cons: hype hues disappear fast; app-only drops can frustrate non-mobile shoppers.

10. Adidas UK

Brand Snapshot & Aesthetic

Adidas fuses its 3-Stripes heritage with studio-ready silhouettes and streetwear swagger. 2025 sees performance tech like HEAT.RDY airflow panels meet fashion-week palettes, while the app lets UK shoppers personalise colour pops or add initials on selected leggings.

Best Pieces to Buy in 2025

• Formotion Sculpt Leggings – zoned compression, stay-put waistband
• Aeroknit Yoga Set – seamless recycled knit, cloud-soft touch
• Ultraboost Light 2025 – lighter BOOST midsole, algae-based upper

Size, Fit & Deals

Women’s 2XS–4XL with petite, tall and maternity options. Leggings sit £30–£90; Creators Club members unlock free next-day delivery and tiered vouchers, while May’s Members Week routinely drops 30 % across activewear.

Sustainability & Pros/Cons

Primegreen fabrics cut virgin polyester; “Made with Nature” pieces use plant dyes and ocean-plastic yarn.
Pros: vast sport specificity, easy store returns, customisation.
Cons: product menu can overwhelm; some colourways limited to online only.

11. Marks & Spencer Goodmove

11. Marks & Spencer Goodmove

Brand Snapshot & Aesthetic

High-street stalwart Marks & Spencer built its Goodmove range for school runs, ParkRuns and sofa-stretch yoga alike. Think no-nonsense neutrals, reflective zip details and fabrics that survive dozens of 40 °C cycles without sagging.

Best Pieces to Buy in 2025

• Go Move High-Waist Leggings – Cool Comfort™ knit, hidden waistband pocket — £19.50
• Cushioned Ankle Socks (5-pack) – arch support, Freshfeet™ odour control — £9.50
• Lightweight Packable Puffer – Thermowarmth™ insulation, stuffs into hood — £45

Size, Fit & Deals

Inclusive UK 6–24 with petite and long lengths. Multi-buy deal: two leggings for £30. Free next-day click & collect and no-quibble in-store returns keep shopping easy.

Sustainability & Pros/Cons

Under “Plan A”, cotton is 100 % responsibly sourced and 40 % of polyester content is recycled.
Pros: solid basics, nationwide returns desk.
Cons: muted colour palette; limited performance extras like compression.

12. UNIQLO Sport Utility Wear

Minimalist design, maximum practicality: UNIQLO’s Sport Utility Wear slips seamlessly from hot yoga to the morning commute without blowing the budget.

Brand Snapshot & Aesthetic

Japanese department-store pricing meets clever HeatTech and AIRism yarns, keeping layers feather-light, quick-drying and commuter-friendly.

Best Pieces to Buy in 2025

• AIRism Ultra-Stretch Active Set – second-skin feel, odour-control finish
• Pocketed UV-Cut Hoodie – UPF 40, packs into its own pocket
• Dry-Ex Shorts – mesh gusset, anti-cling fabric for sticky studio sessions

Size, Fit & Deals

Women’s XXS–XL in store, up to 3XL online; most pieces run true. Leggings land at £24.90 and regularly dip during monthly “Limited Offers” or buy-three-save-20 % bundles.

Sustainability & Pros/Cons

Re.UNIQLO in-store bins turn old garments into insulation.
Pros: wallet-friendly tech, year-round basics.
Cons: smaller in-store size curve; muted colour palette compared with trend-led rivals.

13. H&M Move

Brand Snapshot & Aesthetic

H&M Move serves TikTok-ready looks at supermarket-price money. Think soft pastels, block brights and the bold “Move” stamp on leggings and crops—fresh drops hit UK rails almost every Thursday.

Best Pieces to Buy in 2025

• Zip-Pocket Running Tights – reflective calf strips, key pocket, £24.99
• Seamless Sports Bra – rib under-band, medium impact, £17.99
• Shaping Biker Shorts – sculpt knit, 7-inch inseam, £14.99

Size, Fit & Deals

Inclusive XS–4XL curve; Conscious range starts at £14.99. Join the free app for “Member Prices” and a 10 % first-order code.

Sustainability & Pros/Cons

2025 collection clocks 79 % recycled fibres and ships in paper mailers.
Pros: wallet-friendly, wide size curve.
Cons: squat-proofing varies—check reviews before leg day.

14. Pangaia

Pangaia turns lab breakthroughs into dopamine-bright gym staples that reach UK doorsteps in 3–5 days.

Brand Snapshot & Aesthetic

Eco-luxury meets biochemistry: botanical dyes, recycled nylon and seaweed fibres shape minimalist silhouettes that claim carbon-negative status after offsets.

Best Pieces to Buy in 2025

• Flax-Based Stretch Leggings – plant yarn, sculpt waistband
• C-FIBER™ Crop Top – seaweed cellulose, cooling touch
• Pineapple-Waste Sneaker – sugar-cane sole, vegan upper

Size, Fit & Deals

XXS–XXL; leggings start at £70. Limited-edition colour drops sell out fast, but newsletter sign-ups unlock 10 % off the first basket.

Sustainability & Pros/Cons

Sustainability: carbon-negative production and fully recyclable packaging.
Pros: eco statement colours, science-backed fabrics. Cons: steep prices, unpredictable restock dates.

15. TALA

Sustainability without the beige price shock? That’s the promise of TALA, the buzzy London label born from entrepreneur Grace Beverley’s final-year side hustle and now a staple on UK gym floors and commute platforms alike.

Brand Snapshot & Aesthetic

Signature sculpt-and-smooth seams meet muted earth tones and the occasional jewel-bright drop. Everything is designed in the UK, cut for comfort first, fashion second, and ships in recycled paper mailers that double as returns envelopes.

Best Pieces to Buy in 2025

• DayFlex 2.0 Legging – brushed recycled nylon, V-front waistband, phone pocket
• SkinLuxe Wrap Sports Bra – coolant yarn, cross-back straps, removable cups
• 365 Unitard – ribbed torso panel, 7⁄8 leg, flatlock stitching

Size, Fit & Deals

Size curve XS–4XL with petite lengths; true-to-size but huggy. Leggings land around £45. Weekly “TALA Tuesday” flash drops and Student Beans 15 % keep costs down.

Sustainability & Pros/Cons

92 % of pieces use upcycled or recycled fibres, and the site publishes factory audits.
Pros: eco-led materials, inclusive imagery, transparent pricing. Cons: sporadic restocks; trend colours vanish in minutes.

16. Under Armour UK

Brand Snapshot & Aesthetic

Maryland-born but a fixture in British locker rooms, Under Armour focuses on sweat-busting tech (HeatGear, Iso-Chill) and a straight-up sporty vibe. Logos stay discreet; performance takes centre stage.

Best Pieces to Buy in 2025

• Meridian Ankle Legging – brushed, four-way stretch, drop-in hip pockets, anti-odour finish
• Infinity High-Impact Bra – figure-8 moulded padding, front zip for quick changes
• Flow Dynamic Trainer – rubber-free foam outsole that grips studio floors without squeaks

Size, Fit & Deals

Inclusive XS–3XL; compression feels true to size. Leggings cost £40–£75. Military and blue-light workers save 20 % all year, and the online outlet regularly cuts up to 60 %.

Sustainability & Pros/Cons

Water-saving Green Machine dyeing now colours 45 % of leggings, and 2025 parcels arrive in downsized boxes made with 50 % recycled content.
Pros: unrivalled high-impact support, long-wear durability.
Cons: function-first look can feel less fashion-forward.

17. Reebok UK

Brand Snapshot & Aesthetic

Reebok leans on its retro Vector logo while doubling down on CrossFit-ready tech. Expect bold ‘90s colour blocking, no-nonsense fits and UK delivery in 2–4 days.

Best Pieces to Buy in 2025

• Lux Bold High-Rise Tight – abrasion-resistant knit, mesh calf vents
• PureMove+ Bra – Motion Sense gel adapts support on the fly
• Nano X5 Trainer – wider toe box, plant-based Floatride foam midsole

Size, Fit & Deals

Sizes 2XS–2XL; true-to-size with medium compression. Leggings start at £28. Frequent buy-1-get-1 50 % offers plus outlet extra 25 % codes slash costs.

Sustainability & Pros/Cons

Floatride Grow sneaker uses 50 % plant materials; all 2025 orders arrive in recycled mailers.
Pros: CrossFit durability, fun throwback palette. Cons: active line shrinking as fashion collabs grow.

18. Rainbows & Sprinkles

Brand Snapshot & Aesthetic

Devon-based micro-brand Rainbows & Sprinkles hand-makes feel-good activewear in joyous prints, perfect for mums who want to twin with their kids on a park run.

Best Pieces to Buy in 2025

• Leopard Flash Legging – squat-proof, deep side pockets
• Cloudy Day Pocket Tee – breathable cotton-jersey
• Signature Headband – sweat-wick stretch, matching prints

Size, Fit & Deals

UK 6–22, true-to-size. Leggings £38. Join the email list for 24-hour early access and a 10 % launch code.

Sustainability & Pros/Cons

Organic cotton and print-to-order production cut waste. Pros: mood-lifting designs, supports local makers. Cons: no high-impact bras (yet).

19. Tu Clothing (Sainsbury’s)

19. Tu Clothing (Sainsbury’s)

Brand Snapshot & Aesthetic

Supermarket ease meets Pinterest-friendly styling: pick up groceries and gym staples in one trolley haul, or click & collect next-day for free. Fabrics feel softer in 2025 after a handle upgrade, and colour palettes echo runway brights alongside core blacks.

Best Pieces to Buy in 2025

• Sculpt High-Waist 7⁄8 Legging – deep phone pocket, flatlock seams.
• 2-Pack Racer Vests – recycled poly-cotton, £12.
• Lightweight Bum Bag – ripstop, reflective zip.

Size, Fit & Deals

Sizes 6–26; leggings £16. Nectar card blitzes prices during 25 % off clothing events; free returns in any Sainsbury’s store.

Sustainability & Pros/Cons

48 % of active range now recycled polyester; Better Cotton partnership ongoing.
Pros: budget, inclusive sizing, one-stop shop convenience. Cons: fewer performance fabrics for high-intensity training.

20. Primark Sport (Bonus High-Street Deal)

20. Primark Sport (Bonus High-Street Deal)

Brand Snapshot & Aesthetic

Ultra-affordable trend pieces; in-store only treasure hunt that turns over stock weekly. Neon seam-contour sets mingle with reflective jackets and £3.50 trainer socks.

Best Pieces to Buy in 2025

• Seamless Contour Legging – £8
• Reflective Running Jacket – £18
• Cushioned Trainer Socks – £3.50

Size, Fit & Deals

Women’s XS–XL; fit can vary, so try on. Red-sticker rails at season’s end drop prices another 30-50 %.

Sustainability & Pros/Cons

Primark Cares pledges recyclable garments by 2030, recycled-paper hangtags now standard.
Pros: rock-bottom prices, trendy colours.
Cons: no online shop, limited size curve, variable durability.

Final Stretch

Whether you’re chasing marathon PBs, cruising through Pilates or just want leggings that survive the school run, one (or several) of these 20 women’s activewear UK options will fit the bill. Match performance needs, style vibes, sustainability goals and—crucially—your wallet before adding to basket. Stock levels and promo codes shift fast in 2025, so double-check size charts, fabric blends and live discounts for each brand to dodge returns-desk dramas. Ready to kit out your wardrobe? Browse the freshest August deals and new-season drops now on take a hike uk and get moving in gear that actually keeps up.