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M&S Clothing: What to Buy, How It Fits & How to Get the Right Size Every Time

Author: Stylist and brand team at Tellar

Date: 2025

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Marks & Spencer—known universally as M&S—has been a cornerstone of British retail for more than a century. From everyday staples to trend-forward pieces, the brand has undergone major reinventions while holding onto its reputation for reliable quality and value. But how does its sizing stack up? What’s worth investing in? And how can you make sure what you order actually fits?

Here’s everything you need to know about M&S clothing, followed by why Tellar.co.uk, the UK’s leading free sizing tool, is the smartest way to shop the brand.

What Is M&S Known For?

Founded in 1884, Marks & Spencer became a household name for dependable workwear, smart-casual clothing, underwear, and home essentials. Over time, M&S expanded into food, beauty, and lifestyle—but fashion remains a key pillar.

Notable M&S clothing collections include:

  • Autograph – A premium line with elevated tailoring and fabrics.

  • Per Una – Feminine, trend-led designs.

  • Goodmove – A modern activewear line blending comfort and technical fabrics.

  • M&S Collection – Their core affordable clothing line offering wide size availability.

M&S has also made strides in becoming more fashion-forward in recent years, with viral hits like their wide-leg trousers and figure-flattering jeans that exploded on social media.

What’s Worth Buying at M&S?

If you’re looking for staples that combine comfort, versatility, and style—M&S is a go-to. Here are some of the best pieces to shop:

1. Wide-Leg Trousers & Jeans

Comfortable, stylish, and widely praised for flattering fits. Their £17.50 wide-leg trousers and stretch denim jeans have become cult favourites thanks to their smoothing waistband and generous fit across the hips.

2. Tailored Blazers & Workwear

M&S does high-street suiting exceptionally well. Look for their single-breasted blazers, straight-leg trousers, and cotton-rich shirts that hold up wash after wash.

3. Lingerie & Underwear

The Rosie for Autograph lingerie line is luxurious yet affordable. M&S is also the UK’s biggest lingerie retailer, making it a safe bet for bras, shapewear, and multipack briefs.

4. Outerwear

From wool-blend overcoats to puffer jackets, M&S offers durable and timeless outerwear in a wide size range, including petite and tall fits.

What Is the Quality Like?

✅ The Good

  • Strong tailoring: Items like blazers and trousers are well-structured and last multiple seasons.

  • Fair pricing: Quality often exceeds that of similarly priced competitors like Next or H&M.

  • Inclusive sizing: M&S offers petite, tall, and plus sizes, and many garments come in short, regular, and long lengths.

⚠️ Where It Falls Short

  • Some basics (e.g. T-shirts or socks) may lose shape over time.

  • Fit can vary drastically across collections—especially between M&S Collection and Autograph.

  • Knitwear and lingerie sometimes receive mixed reviews on durability.

M&S Returns Policy (UK)

M&S has a 35-day return window for most items, and 14 days for sale items. Returns are free in-store or by post, and refunds are issued to the original payment method. Some exceptions apply—like pierced jewellery or opened beauty products.

If you’ve ever ordered two sizes “just in case”, you’ll know how tedious and wasteful returns can be. That’s where Tellar comes in.

Sizing at M&S: Why It’s So Confusing

Like many UK high street brands, M&S has its own interpretation of sizing—often leading to confusion. A size 12 in M&S trousers might be closer to a size 10 at other retailers like Zara or COS. Sizing also varies between Autograph, Goodmove and Per Una, meaning one size does not fit all.

Which is why we recommend using:

🔍 Tellar.co.uk – The UK’s Leading Free Sizing Tool

Never guess your size again.

Tellar.co.uk is a powerful tool that lets you match your exact body measurements to M&S and 1,500+ brands in seconds. It’s completely free, fast, and accurate.

Why Use Tellar with M&S?

  • Know before you buy: Tellar compares your body to real garment data from M&S.

  • No more returns: Shop with confidence and reduce waste.

  • Includes all body types: Works whether you're tall, petite, curvy, or in between.

👉 Print your free measuring tape

👉 Create your free profile

📚 More M&S and High Street Sizing Help

Want to compare how other UK high street brands size up? These Tellar articles are essential reads:

These resources will show you how drastically sizing can change from one brand to another—and why using Tellar is the only way to shop smart in 2025.

Tellar Socials – Stay Connected

Follow Tellar for daily tips on fit, body shape, brands and size drops:

Conclusion: Is M&S Worth It?

Yes—if you know your size. M&S continues to be one of the UK’s most trusted clothing retailers, offering impressive value and durability in many of its collections. But inconsistent fits across lines and a wide variety of cuts mean that size guides just don’t cut it anymore.

Use Tellar.co.uk to shop M&S confidently and get clothes that fit you right first time.

✅ Save time

✅ Avoid returns

✅ Shop smarter

Find your size in 1,500+ brands real-time. It’s free & easy — only at Tellar.co.uk

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