Update your browser for a better shopping experience!

Get faster load times, stronger security and access to all features.

Skip to content

SALE is here. Up to 50% off – shop now
Shop our best-in-class school uniform
What to wear now. Shop new-in womenswear

Search product, code or brand

Sign in

0

Search product, code or brand

All Women's sale
Coats & Jackets
Dresses
Jumpers & Cardigans
Shirts & Blouses
Tops
Shoes & Boots

All Men's sale
Coats & Jackets
Jumpers & Cardigans
Shirts
Tops & T-Shirts
Trousers

All Brands sale
Women's sale
Men's sale
Kids' sale
Lingerie sale
Beauty sale

All Kids' sale
Boys'
Girls'
Baby sale

All Homeware sale
Home Accessories
Cookware & Dining

All Lingerie sale
Bras
Knickers
Nightwear

All Beauty sale
Makeup
Skincare

Lingerie & Nightwear sale

Best Sellers
Everyday Basics
Cardigans
Co-Ords
Dresses
Jackets and Coats
Jeans
Jumpers
Shirts and Blouses
Shorts
Skirts
Sportswear
Tops
Trousers
T-Shirts
Workwear

All Dresses
Maxi Dresses
Midi Dresses
Summer Dresses
Wedding Guest Dresses

All Summer Shop
Beachwear
Linen Clothing
Swimwear

Lingerie & Nightwear

Bras
Knickers
Nightwear

All Shoes
Ballet Flats
Heels
Sandals
Trainers

All Accessories
Handbags & Bags

Body Fit & Maternity

Curve
Maternity
Petite
Tall

Jeans & a Nice Top

Value You Can Trust

All Bras
Balcony Bras
Bra Accessories
Cotton Bras
Demi Cup Bras
First Bras
F-K Bras
Full Cup Bras
Maternity and Nursing Bras
Multipack Bras
Non-Wired Bras
Post-Surgery Bras
Padded Bras
Sports Bras
Strapless Bras

All Knickers
Brazilian Knickers
Cotton Knickers
Full Brief Knickers
High-Leg Knickers
Multipack Knickers
No-VPL Knickers
Thongs

All Shapewear
Anti-Chafing Shorts
Bodies
Shaping Knickers
Slips

All Nightwear
Cotton Pyjamas
Dressing Gowns
Loungewear
Nightdresses
Pyjamas
Pyjama Sets
Slippers
Summer Pyjamas

Socks & Tights

Socks
Tights

Vests & Camis

Vests & Camis

Lingerie & Nightwear sale

Book your Bra Fit

Clothing

Casual Shirts
Chinos
Co-Ords
Hoodies
Jackets & Coats
Jeans
Joggers
Knitwear
Polo Shirts
Shirts
Shorts
Sportswear
Sweatshirts
Tops
Trousers
T-Shirts

Suits & Occasionwear

All Suits
Blazers
Formal Shirts
Occasionwear
Smart Trousers
Ties
Tuxedos

Nightwear & Underwear

All Nightwear
Pyjamas
Pyjama Sets
Socks
Underwear
Vests

All Summer Shop
Linen Shop
Swimwear

All Shoes
Loafers
Smart Shoes
Summer Shoes
Trainers

All Accessories
Bags
Belts
Hats

Value You Can Trust

Girls (2yrs-16yrs)

Accessories
Dresses
Footwear
Jackets and Coats
Jeans
Joggers
Jumpers and Cardigans
Leggings
Nightwear
Outfits and Sets
Skirts
Socks and Tights
Swimwear
Tops
Underwear and Vests

Boys (2yrs-16yrs)

Accessories
Footwear
Jackets and Coats
Jeans
Joggers
Jumpers and Sweatshirts
Nightwear
Outfits and Sets
Shirts
Shorts
Socks
Swimwear
Trousers
Tops
Underwear and Vests

Baby Boy
Baby Girl
Baby Grows
Baby Outfits
Baby Toys
Newborn Clothing

Boys' Uniform
Girls' Uniform

Baby Holiday Clothes
Boys' Holiday Clothes
Girls' Holiday Clothes

Just Arrived Girls

Just Arrived Boys

Just Arrived Baby

Everyday Essentials

Blazers
Dresses
Jumpers & Cardigans
PE Kit
Polo Shirts
Shirts & Blouses
Shoes
Shorts
Skirts
Trousers

Blazers
Jumpers
PE Kit
Polo Shirts
Shirts
Shoes
Shorts
Trousers

School Essentials

First Bras
Lunch Boxes
School Bags
Socks
Tights

Shop by Colour

Black
Blue
Green
Grey
Navy
Red
White

Shop By Age - Girls'

2-8 Years
8-18 Years

Shop By Age - Boys'

2-8 Years
8-18 Years

All School Uniform

School Trousers

All Bedding
Bed Sheets
Duvets
Duvet Covers & Sets
Mattress Protectors
Pillows
Pillowcases

Cooking & Dining

Dinner Sets
Glassware
Kitchenware
Mugs
Outdoor Dining
Pots & Pans
Tableware

Home Furnishings

Cushions
Cushion Covers
Curtains
Rugs
Throws

All Bathroom
Bath Mats
Towels

All Lighting
Ceiling Lights
Floor Lamps
Table Lamps

Home Accessories

Artificial Flowers & Plants
Home Fragrance
Vases
Plant Pots

Summer Shop

Beach Towels
Suitcases & Luggage

Striped Bedding

Heatwave Essentials

University Essentials

All Skincare
Cleansers
Eye Cream
Face Masks
Moisturisers
Serum
Sun Cream

All Makeup
Beauty Accessories
Blushers
Foundation
Lipstick
Mascara
Nail Care

All Bath & Body
Hand Cream
Hand Wash
Shower Gel
Travel Size Toiletries
Wellbeing

Fragrance

Women’s Perfume
Men’s Eau de Parfum

All Haircare
Conditioner
Hair-Styling Accessories
Shampoo

All Beauty Gifts
Bath & Body Gifts
Perfume Gifts
Skincare Gifts
Make-Up Gifts

All Men's Grooming
Men's Aftershave
Men's Gifts
Moisturisers

All Korean Skincare
Beauty of Joseon
Medicube

NEW: Sunday Riley

Free Gift with one Prai Product

Our Beauty Top Picks

Women's Holiday Clothes

All Women's Holiday
Just Arrived Summer
Beach Dresses
Beachwear
Bikinis
Co-Ords
Linen Shop
Linen Trousers
Sandals
Shorts
Skirts
Summer Dresses
Summer Tops
Sunglasses
Swimwear

Men's Holiday Clothes

All Men's Holiday
Chinos
Linen Shop
Shorts
Short Sleeve Casual Shirts
Summer Shoes
Swimwear
T-Shirts

Boys' Holiday Clothes

All Boys' Holiday
Sandals
Shorts
Swimwear
T-Shirts

Girls' Holiday Clothes

All Girls' Holiday
Dresses
Sandals
Shorts
Skirts
Swimwear
T-Shirts

Travel Essentials

Beach Towels
Suitcases & Luggage
Suncream
Travel Sized Toiletries

Women's Swimwear

Women's Linen Clothing

Women's Summer Dresses

Men's Linen Clothing

Upgrade Your Luggage

Summer Beauty Top Picks

Gifts by Price

Gifts Under €20
Gifts Under €30
Gifts Under €50
Luxury Gifts

Gifts by Recipient

Gifts For Her
Gifts For Him
Gifts For Kids
Baby Gifts
Best Sellers

Gifts by Occasion

Anniversary Gifts
Birthday Gifts
Congratulations Gifts
Communion Gifts
Housewarming Gifts
Wedding Gifts

All Gift Cards

E-Gift Cards
Corporate Gifts

Gifts for the Family

Gifts for Mum
Gifts for Dad
Gifts for Brother
Gifts for Sister
Gifts for Grandmas

Gifts Under €20

Food

Loved by Customers
Picky Tea
Store Cupboard

The Home of Recipes

Budget Recipes

Food In Store

Store Locator

Shop Women's Offers

20% off Rosie
30% off Radley

Shop Beauty Offers

Free Gift with one Prai Product
25% off Clinique jumbo & refill products

Shop Men's Offers

3 for €25 on selected T-Shirts
Sartorial Shirts Offers

All Home offers
30% off selected bedding
40% off selected Kitchenware
Up to 40% off selected Luggage
Up to 30% off Lighting

Free Gift with one Prai Product

Find store Sparks

Help
Contact Us
Register

Navy Black Cream Grey Blue Beige Brown Green Tailored fit Slim fit Regular fit Skinny fit Relaxed fit Flat front Single pleat Wool Cotton Work Wedding guest Formal Groom Prom Races Funeral Summer Graduation Party Casual Cocktail Textured Striped Checked

You are here:

Home
Men
Men's Trousers
Smart Trousers
Formal

Formal, Men, Men's Trousers, Smart Trousers

There are 42 Items found

Colour with 8 options
Navy
(16)
Black
(7)
Cream
(5)
Grey
(5)
Blue
(4)
Beige
(2)
Brown
(2)
Green
(1)
Fit with 5 options
Tailored fit
(21)
Slim fit
(11)
Regular fit
(4)
Skinny fit
(4)
Relaxed fit
(2)
Search Size filter
Size with 15 options
28
(18)
30
(30)
32
(33)
34
(34)
36
(31)
38
(31)
40
(22)
42
(19)
44
(5)
26
(2)
S
(5)
M
(5)
L
(5)
XL
(5)
2XL
(3)
Style with 3 options
Flat front
(31)
Single pleat
(7)
Trousers
(4)
Body Fit with 4 options
Regular
(38)
Short
(37)
Tall
(30)
Slim
(1)

Formal

There are 42 Items found

Sort by

Regular Fit Premium Pure Wool Suit Trousers

M&S SARTORIALRegular Fit Premium Pure Wool Suit Trousers

Tailored Fit Check Suit Trousers

M&STailored Fit Check Suit Trousers

Tailored Fit Stretch Smart Trousers

€18.90 - €36

M&STailored Fit Stretch Smart Trousers

Regular Fit Premium Pure Wool Suit Trousers

M&S SARTORIALRegular Fit Premium Pure Wool Suit Trousers

Regular Fit Premium Pure Wool Suit Trousers

M&S SARTORIALRegular Fit Premium Pure Wool Suit Trousers

Tailored Fit Stretch Smart Trousers

€18.90 - €36

M&STailored Fit Stretch Smart Trousers

Skinny Fit Stretch Ultimate Suit Trousers

M&SSkinny Fit Stretch Ultimate Suit Trousers

Tailored Fit Flannel Smart Trousers

M&STailored Fit Flannel Smart Trousers

Slim Fit Striped Suit Trousers

M&SSlim Fit Striped Suit Trousers

Tailored Fit Pure Merino Wool Trouser

AutographTailored Fit Pure Merino Wool Trouser

Tailored Fit Wool Blend Suit Trousers

AutographTailored Fit Wool Blend Suit Trousers

Tailored Fit Pure Wool Textured Suit Trousers

JAEGERTailored Fit Pure Wool Textured Suit Trousers

Relaxed Fit Textured Stretch Trousers

M&SRelaxed Fit Textured Stretch Trousers

Tailored Fit Italian Wool Rich Suit Trousers

M&STailored Fit Italian Wool Rich Suit Trousers

Skinny Fit Stretch Ultimate Suit Trousers

M&SSkinny Fit Stretch Ultimate Suit Trousers

Slim Fit Premium Pure Wool Suit Trousers

M&S SARTORIALSlim Fit Premium Pure Wool Suit Trousers

Regular Fit Premium Pure Wool Suit Trousers

M&S SARTORIALRegular Fit Premium Pure Wool Suit Trousers

Tailored Fit Stretch Smart Trousers

€18.90 - €36

M&STailored Fit Stretch Smart Trousers

Skinny Fit Stretch Ultimate Suit Trousers

M&SSkinny Fit Stretch Ultimate Suit Trousers

Slim Fit Twill Suit Trousers

M&SSlim Fit Twill Suit Trousers

Tailored Fit Performance Twill Trousers

AutographTailored Fit Performance Twill Trousers

Slim Fit Premium Pure Wool Suit Trousers

M&S SARTORIALSlim Fit Premium Pure Wool Suit Trousers

Slim Fit Premium Pure Wool Suit Trousers

M&S SARTORIALSlim Fit Premium Pure Wool Suit Trousers

Tailored Fit Performance Twill Trousers

AutographTailored Fit Performance Twill Trousers

Tailored Fit Flannel Smart Trousers

M&STailored Fit Flannel Smart Trousers

Tailored Fit Flannel Smart Trousers

M&STailored Fit Flannel Smart Trousers

Velvet Suit Trousers

M&SVelvet Suit Trousers

Slim Fit Wool Blend Performance Trousers

AutographSlim Fit Wool Blend Performance Trousers

Skinny Fit Stretch Ultimate Suit Trousers

M&SSkinny Fit Stretch Ultimate Suit Trousers

Tailored Fit Stretch Smart Trousers

€18.90 - €36

M&STailored Fit Stretch Smart Trousers

Slim Fit Textured Check Stretch Trousers

M&SSlim Fit Textured Check Stretch Trousers

Tailored Fit Italian Wool Rich Suit Trousers

M&STailored Fit Italian Wool Rich Suit Trousers

Slim Fit Wool Blend Performance Trousers

AutographSlim Fit Wool Blend Performance Trousers

Slim Fit Suit Trousers

M&SSlim Fit Suit Trousers

Tailored Fit Stretch Smart Trousers

€18.90 - €36

M&STailored Fit Stretch Smart Trousers

Tailored Fit Wool Rich Suit Trousers with Mohair

€67.20~~€96~~

AutographTailored Fit Wool Rich Suit Trousers with Mohair

Slim Fit Pinstripe Suit Trousers

€32.50~~€65~~

M&SSlim Fit Pinstripe Suit Trousers

Slim Fit Textured Twill Stretch Trousers

€32.50~~€65~~

M&SSlim Fit Textured Twill Stretch Trousers

Tailored Fit Textured Stretch Suit Trousers

€32.50~~€65~~

M&STailored Fit Textured Stretch Suit Trousers

Tailored Fit Italian Wool Rich Suit Trousers

M&STailored Fit Italian Wool Rich Suit Trousers

Tailored Fit Cotton Linen Striped Suit Trousers

M&STailored Fit Cotton Linen Striped Suit Trousers

Relaxed Fit Stretch Ultimate Suit Trousers

€38.50~~€55~~

M&SRelaxed Fit Stretch Ultimate Suit Trousers

Don't miss out

Register to receive exclusive offers tailored to you, plus rewards and promotions before anyone else. Just select ‘YES’ on the next page and never miss a thing.

Sign up for the newsletter

Free delivery when you spend over €75

Free returns for online orders

Standard delivery within 4 days*

Here to Help

Help & Contact Us
Find a store
Product recalls

Delivery & Returns

Where's my order?
Delivery & collection
Guest Orders & Returns
Returns & refunds

Shopping with Us

Sparks
Sparks FAQs
Gift card balance
Size guides
Sustainability

More from M&S

M&S Corporate site
M&S Corporate Gifts
Careers
Gender Pay Gap

© 2026 Marks and Spencer plc (UK)Terms & Conditions Privacy CookiesAccessibility Modern Slavery Act