Premium Gym Wear & Activewear for Men & Women | UK – Premium Fitness & Activewear for Men & Women|UK

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Best-Selling UK Activewear & Fitness Clothing

Flytex Compression Knee Sleeves - Increase Blood Flow and Reduce Fatigue - Allen-Fitness

Flytex Compression Knee Sleeves for Joint Pain Relief and Recovery

from £10.19

Women Seamless Activewear Fitness Gym Wear Sportswear Crop Top Leggings Yoga bra Set - Allen-Fitness

Seamless Women's 3-Piece Activewear Set, Nylon Spandex Gym Outfit

£33.88

Custom Fitness Hoodie for Men - Gym Workout Clothes, Yoga Wear, Outdoor Jogging Sportswear Set - Allen-Fitness

5 Piece Mens Fit Gym Clothes, Moisture-Wicking Fitness Hoodie Set

£45.90 from £33.30

Chrleisure High Waist Seamless Leggings - Breathable, Stretchable for Yoga & Fitness - Allen-Fitness

Chrleisure High Waist Seamless Leggings, Breathable Stretch Activewear

from £6.08

Men's Cycling Jersey Long Sleeve - Breathable Quick-Drying Performance Shirt

£20.39

D20 smartwatch Y68 relogio montre reloj inteligente Sport Fitness Band Waterproof Wearable Devices Android Smart Watch - Allen-Fitness

D20 Y68 Smart Watch, Waterproof Fitness Tracker for Android and iOS

£15.27

CHRLEISURE High Waist Pocket Leggings - Solid Color Workout Leggings for Women

£25.50

High waist bathing suit plus size designer swimwear womens bikinis

£30.59 £25.96

Real Reviews from Real Customers

★★★★★
The Flytex Compression Knee Sleeves have completely transformed my workouts. The support is incredible and they're so comfortable I forget I'm wearing them!
Sarah Mitchell
Manchester, UK

★★★★★
Best investment I've made for my fitness journey. The quality is outstanding and the customer service is exceptional. Highly recommend!
James Chen
London, UK

★★★★★
I've tried many brands, but Allen Fitness stands out. Their products are durable, effective, and the prices are fair. Will definitely order again.
Emma Thompson
Birmingham, UK

★★★★★
Fast shipping, great quality, and the fit is perfect. These compression sleeves have made a real difference in my recovery time.
Michael Rodriguez
Leeds, UK

★★★★★
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Why Choose Allen Fitness

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Trusted by 116+ Customers

Join thousands of satisfied athletes and fitness enthusiasts.

Sportswear for Men: High-Elastic Quick-Drying Compression Leggings Set

Premium Compression Activewear

Men's Activewear

High-performance compression wear engineered for running, strength training, and HIIT. Built from moisture-wicking, four-way stretch fabric with targeted muscle support — designed for men who train hard and expect more from their kit.

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Seamless Women's 3-Piece Activewear Set, Nylon Spandex Gym Outfit

5 Piece Mens Fit Gym Clothes, Moisture-Wicking Fitness Hoodie Set

Chrleisure High Waist Seamless Leggings, Breathable Stretch Activewear

CHRLEISURE High Waist Pocket Leggings - Solid Color Workout Leggings for Women

New Fitness Gym Sets 3-Piece Long Sleeve Hoodie Tracksuit Bra Leggings Workout Apparel Yoga Set for Women

Premium Compression Activewear

Women's Performance Leggings

High-waist compression leggings engineered for running, HIIT, and gym training. Crafted from moisture-wicking, four-way stretch fabric with a sculpting fit — built for women who demand performance without compromising on style.

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Best-Selling Performance Activewear

Sports Essentials & Outdoor Gear Collection

Compression Wear

IPX8 EARBUDS GOR SWIMMING

£27.53

Wireless Noise-canceling Bluetooth Over-ear Headphones

£25.64

Waterproof Fitness Sports Travel Duffel Bag - Versatile Weekender for Men and Women

£19.75

Lenovo HD200 Wireless Gaming Headset & Speakerphones

£42.82 £38.99

Large Capacity Stainless Steel Thermos Cup - Insulated 1300ML to 4000ML for Outdoor Use

from £23.22

Cycling protective gear, knee pads, elbow pads, four-piece set of anti-fall knee pads, full set of roller skating equipment, motorcycle extreme sports

£16.30

Challenge Workouts Wall - Portable Boxing Target & Equipment

£149.90

Bravose Limited Edition Boxing Gloves 16oz - 365 Series White with Velcro Closure

£120.35

Waterproof Backpack 10L Cycling Water Bag Outdoor Sport Climbing Hiking Pouch Hydration Backpack

from £8.80

Diving Mask & Snorkel Set - Shockproof, Anti-Fog Scuba Gear for Adults in Vibrant Colors

£20.47

Scuba Diving Mask Ank Snorkel Diving Equipment Shockproof Anti-Fog Underwater Snorkel Mask For Adult Swimming Goggles

£25.77

Comfortable Aqua Shoes For Men - Neoprene Indoor Outdoor Fitness Sneakers - Lightweight & Breathable

£35.70 £34.30

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Sleeveless Backless Long Slim Fit Evening Dress for Women

Elegant Women's Business Suit – Stylish 2-Piece Set in Multiple Colors & Sizes M-4XL

Elegant Backless Dress for Women with Bell Sleeves, High Waist, Khaki Color, Available in S, M, L

New Season Collection

Women's Summer Fashion

Lightweight, breathable women's summer wear built for warm-weather training and everyday athleisure. From moisture-wicking tank tops to versatile summer dresses — effortless style that moves with you.

Shop Tops Shop All Womens

We design durable travel apparel with a conscience — 100% made in America.
Products by United By Blue.

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Athletic woman posing outdoors in a blue zip-up sports jacket and black leggings against a clear sky, showcasing activewear style and performance fit.

Woman in black performance activewear with white stripe detailing, crouching outdoors under a blue sky, with wind-swept hair highlighting a sleek, athletic look.

Women’s Dresses Collection - Allen-Fitness

Don't take our word for it

★★★★★
These running shoes have completely transformed my marathon training. The support and durability are unmatched - I've logged over 300 miles and they still feel brand new.

Sarah M.
London

★★★★★
As a personal trainer, I'm on my feet all day. The compression gear from Allen-Fitness keeps me performing at my best. Quality you can feel.

James R.
Manchester

★★★★★
Finally found performance wear that actually performs! The fit is perfect and the materials are premium. Worth every penny.

Emma L.
Birmingham

★★★★★
Couldn't be happier with the service I received from this company.
Matt C.
Leeds GB

★★★★★
Arrived fast and beautifully boxed. They even let me model on their site :)
Sharon S.
Oxford GB

Just restocked

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Men's High Waist Active Leggings

£33.65 £30.59

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Men's High Waist Active Leggings

£15.29

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Men's High Waist Active Leggings

£20.39 £17.33

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Men's Breathable Active Leggings

£20.39 £18.35

Sportswear for Men: High-Elastic Quick-Drying Compression Leggings Set

£33.85

Men's Compression Running Suit Set - Long-sleeve Shirt & Pants for Fitness Training Activewear - Allen-Fitness

Men's Compression Running Suit Set UK – Long-sleeve Shirt & Pants for Fitness Training

£27.53

Men's Quick-Drying High Elastic Fitness Leggings - Breathable & Slim Fit - Black

£15.30 £13.25

Compression Pants Mens Gym Leggings Sport Training Pants Men Running Tights Trousers Men Sportswear Dry Quick Fit Jogging Pants - Allen-Fitness

Compression Pants UK Mens Gym Leggings – Sport Training Running Tights Quick Dry

£16.12 £13.25

Slim Fit Men's Long Sleeve Quick Dry T-Shirt for Outdoor Jogging - T-shirt Gym Tops Sportswear

£22.95

Men's Quick-Drying High Waist Sports Running Leggings

£11.33

Plus size Jogger Pants Workout Gym sweat trouser Side Zipper Pockets Slim Fit trousers for men

£38.92

Pocket Training Sweatpants with Adjustable Waistband & Convenient Pockets

£40.64

Men Gym Fitness Compression Sports Suit Clothes Running Jogging Sport Wear Exercise Workout Tights

£46.49

GymBum UK Highland Combat Rash Guard

£50.99

Men’s Breathable Athletic Set – White “Just Keep Moving” T-Shirt & Black Joggers

£40.09 from £33.76

Long Sleeve Gymwear Men's T-shirt | Fitness Sportswear

£15.30 £13.32

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33 products

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Supporting Local Charity

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90-Days Return Policy

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Buy Now

Woman wearing a light blue zip-up running jacket and burgundy leggings outdoors, with wind-blown hair and a scenic countryside backdrop, showcasing activewear in motion.

Athlete feature

Allen-Fitness

We know how important it is to have gear that doesn't let you down when you're pushing your limits. That's why we only use the highest quality fabrics.