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Think underwear is just a background player? Think again. The right pair of long johns, briefs, or socks can change how you feel all day — from morning coffee to evening walks. Comfort, temperature control, and fit affect everything from posture to confidence. If you're like me, I’d rather invest in clothing I barely notice than pieces that constantly bug me. So, whether you’re after breathable cotton for everyday wear or thermal long johns for a chilly hike, getting the basics right makes life smoother.
There’s a huge range of shops across the UK that specialise in men's underwear and socks. Below I’ve listed retailers that consistently offer quality, variety, and good sizing. I focus on stores that are easy to shop in the UK — both high-street and online — and include options for budget buyers, eco-conscious shoppers, and those after premium fabrics.
Marks & Spencer is a go-to for many Brits when it comes to underwear basics. You’ll find reliable cotton briefs, thermal long johns for winter, and hard-wearing socks. They often use soft, breathable fabrics and have sizes that fit a wide range of body types. If you prefer classic cuts and steady quality without chasing trends, M&S is hard to beat.
John Lewis offers a curated selection of brands from budget-friendly to premium. Look for their range of long johns and branded underwear from suppliers who focus on fit and comfort. Their in-store staff and online filters help you compare fabrics and sizes, which is handy if you’re indecisive about what to choose.
ASOS is great if you want variety and trend-led choices. They stock everything from simple cotton trunks to performance boxers and novelty socks. The site is excellent for browsing many brands in one place, and their size guides make it easier to get the right fit. Expect bold designs alongside trusted everyday options.
Next provides practical, family-friendly underwear options. Their long johns are often priced competitively and they offer multipacks that are ideal if you want to replace several pairs at once. The focus here is value and consistent quality — perfect for building a reliable underwear drawer.
Uniqlo’s speciality is tech-forward fabrics and minimalist design. Their AIRism and Heattech collections include lightweight briefs and thermal long johns that regulate temperature well. If you’re after modern fabric technologies that wick moisture and feel cool or warm as needed, Uniqlo is a smart stop.
H&M is a solid choice for affordable, fashion-forward underwear and socks. Their basics line offers soft cotton options, while their conscious collection includes more eco-friendly materials. If you like frequent updates to patterns and styles, H&M gives plenty of variety at low prices.
If you’re after rock-bottom prices, Primark has huge value packs of socks and underwear. The fabric quality is basic but serviceable, and it’s ideal for stocking up with minimal cost. Just keep in mind that longevity might not match higher-priced brands.
For adventure-ready long johns and performance socks, look to outdoor specialists. Patagonia, plus UK retailers like Cotswold Outdoor, supply merino and synthetic base layers designed for hiking and cold-weather sports. They’re more expensive, but they perform exceptionally when warmth and moisture management matter.
Choosing fabric is more than a feel-good decision — it dictates breathability, durability, and warmth. I’ll walk you through the most common materials so you can match fabric to activity and season.
Cotton is soft, breathable, and gentle on the skin. It’s ideal for everyday underwear and casual socks. Pure cotton is comfortable but can hold moisture, so it’s not the best for intense workouts. Look for combed or Pima cotton for a smoother, longer-lasting feel.
Merino wool is a performance marvel — lightweight yet warm, breathable, and naturally odor-resistant. It’s perfect for long johns intended for hikes, cold commutes, or overnight wear. Merino works well in layers because it regulates temperature without feeling bulky.
Polyester and nylon blends are common in performance underwear and socks. They wick moisture away from the body and dry quickly, making them ideal for gym sessions and travel. Synthetic fabrics can also be blended with cotton or wool to add durability and stretch.
Bamboo and modal fabrics are silky, breathable, and increasingly popular for underwear. They’re great if you want softness with a sustainable edge — bamboo grows quickly and uses less water, although production methods vary so check for eco-certifications.
Nothing ruins a great pair of long johns like a poor fit. Here are practical tips for measuring and choosing the right size, using imperial units so it’s familiar to many readers.
Use a soft tape and measure your waist where your trousers usually sit — typically around the navel. Record the number in inches. For briefs and boxer-briefs, also measure hip width at the widest point. Compare those inches to the store’s size chart — sizes can vary between brands.
For long johns, check the inseam length in inches and look at the rise (distance from the crotch to the top of the waistband). A longer inseam can be useful if you’re tall or want extra coverage, while a higher rise gives better warmth around the midsection.
The season should guide fabric and style choices. I keep a rotation of lightweight briefs for summer and thermal long johns for winter. Here’s how to approach each season like a pro.
In winter, prioritize warmth and layering. Merino wool or thermal synthetics are your best bet for long johns. Pair them with thick wool or insulated socks — ideally with cushioned soles if you plan to hike.
When temperatures climb, switch to lightweight cotton or AIRism-style fabrics and low-cut ankle socks. These reduce sweating and stay cool under lighter clothing. Breathable fabrics that wick moisture help prevent chafing and keep you comfortable all day.
More shoppers care about where their clothes come from — including underwear and socks. Several UK brands and international labels now offer sustainably produced options. If you want to reduce your footprint, look for transparent supply chains, recycled materials, and natural fibres.
Patagonia provides recycled and responsibly-sourced options for base layers. UK brands such as Thought and M&S’s sustainable ranges also use organic cotton and recycled fibers. Smaller brands often use GOTS-certified cotton or ethically-produced merino — check labels and product descriptions to verify claims.
Buying higher-quality underwear that lasts longer reduces waste. Instead of rotating out cheap pairs that wear quickly, invest in a few durable items you truly like. It’s a simple swap that cuts down on consumption over time.
Take care of your underwear and socks and they’ll repay you with months, even years, of reliable wear. Little habits matter — and they’re easy to adopt.
Wash most underwear in cool water and use a gentle cycle. Hot water can shrink cotton and damage elastic. Turn socks and long johns inside out to protect fabrics and keep colours bright. For merino and delicate fabrics, use a wool-friendly detergent and a hand wash or delicate machine cycle.
Avoid high heat in tumble dryers where possible — air drying preserves elasticity and prevents shrinking. Fold underwear neatly and store socks in pairs to cut down on missing mates. If you have limited space, roll socks rather than balling them up to prevent stretching.
If you’re budget-conscious, you can still get comfortable underwear without compromising quality. Multipacks, seasonal sales, and outlet stores are your friends. Here’s how to shop smart so you get the most for your money.
Stores like Next, Primark, and M&S often sell multipacks that dramatically lower the price per pair. Out-of-season sales — like winter thermals in late spring — are also great times to stock up. Keep an eye on end-of-line clearances for classic styles that won’t go out of fashion.
While it’s tempting to splurge on designer briefs, consider investing in a few high-quality base layers or merino long johns that last. Pair them with cheaper everyday socks and you’ll balance cost and comfort effectively.
Not all brands are created equal. Your lifestyle should guide which retailers you choose. Are you on your feet all day? Do you commute in variable weather? Or are you chasing performance for sports? Here’s a quick breakdown to help decide.
Marks & Spencer, John Lewis, and Uniqlo offer comfortable, understated basics that suit daily routines. Their fits are usually conservative and reliable — perfect for smart-casual wardrobes.
ASOS, Patagonia, and specialist outdoor stores sell performance fabrics that handle sweat and movement well. Look for moisture-wicking properties and supportive designs — especially for long-distance walking or gym use.
Primark and Next are great for families who need decent underwear in bulk without breaking the bank. Primark’s low prices are unmatched, while Next gives a balance of value and durability.
Think of underwear like a tool: pick the material and shape that matches the job. Measure in inches, read product descriptions, and don’t be shy to try different brands until you find your favourites. A little attention here saves a lot of discomfort later.
Finding the right long johns, underwear, and socks in the UK doesn’t have to be a chore. Whether you prioritise comfort, performance, sustainability, or price, there are excellent retailers that meet each need. Start with good measurements in inches, choose fabrics that match your lifestyle, and invest in quality where it counts. With the right approach, your underwear drawer will become a quiet source of comfort that supports your day — without drama.
