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Men Slim Fit Suits

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Save £50.00Men's Windowpane Check Slim Fit Suit - BLAKE - Navy BlueMen's Windowpane Check Slim Fit Suit - BLAKE - Navy Blue
Save £50.00Men's Slim Fit Windowpane Check Blue Suit - BLAKE - Pale BlueMen's Slim Fit Windowpane Check Blue Suit - BLAKE - Pale Blue
Save £145.00Men’s Rowan 2 Pieces Suit Textured Wedding Cotton Set - GreyMen’s Rowan 2 Pieces Suit Textured Wedding Cotton Set - Grey
Save £145.00Men's Slim Fit Linen 2 Piece Suit Set - Navy BlueMen's Slim Fit Linen 2 Piece Suit Set - Navy Blue
Robert Simon
Men's Slim Fit Linen 2 Piece Suit Set - Navy Blue Sale price£139.99 Regular price£284.99
Save £55.00Men's Cotton Slim Fit Beige Suit - KINGSTON - BeigeMen's Cotton Slim Fit Beige Suit - KINGSTON - Beige
Robert Simon
Men's Cotton Slim Fit Beige Suit - KINGSTON - Beige Sale price£214.99 Regular price£269.99
Save £145.00Men's Self Patterned Slim Fit Suit - JUDE - Light GreyMen's Self Patterned Slim Fit Suit - JUDE - Light Grey
Sold outSave £145.00Men's Self Patterned Slim Fit Suit - JUDE - Light BlueMen's Self Patterned Slim Fit Suit - JUDE - Light Blue
Save £60.00Men’s 2-Piece Cotton-Linen Formal Suit - GIOVANNI CREAMMen’s 2-Piece Cotton-Linen Formal Suit - GIOVANNI CREAM
Sold outSave £50.00Men's Lightweight Slim Fit Self Patterned Suit - Camden Green - GreenMen's Lightweight Slim Fit Self Patterned Suit - Camden Green - Green
Save £70.00Men's Double Breasted Pinstripe Suit - JAYCE GreyMen's Double Breasted Pinstripe Suit - JAYCE Grey
Robert Simon
Men's Double Breasted Pinstripe Suit - JAYCE Grey Sale price£224.99 Regular price£294.99
Men's 3-Piece Tweed Glen Check Suit - CARIDI WINE - WineMen's 3-Piece Tweed Glen Check Suit - CARIDI WINE - Wine
Men’s 3-Piece Slim Fit Formal Suit - Malibu - BlackMen’s 3-Piece Slim Fit Formal Suit - Malibu - Black
Save £103.50Men's Navy Blue Hardy Check Suit Jacket and Double-Breasted Waistcoat with Casual Stone Beige Cotton Chino Trousers - Navy Blue - Stone BeigeMen's Navy Blue Hardy Check Suit Jacket and Double-Breasted Waistcoat with Casual Stone Beige Cotton Chino Trousers - Navy Blue - Stone Beige
Men’s 3-Piece Slim Fit Formal Suit - Malibu - Navy BlueMen’s 3-Piece Slim Fit Formal Suit - Malibu - Navy Blue
Save £103.00Men's Royal Blue Slim Fit 3-Piece Wedding Suit with Light Blue Tweed Waistcoat - Navy BlueMen's Royal Blue Slim Fit 3-Piece Wedding Suit with Light Blue Tweed Waistcoat - Navy Blue
Save £103.00Men's Royal Blue Slim Fit 3-Piece Suit with Navy Blue Windowpane Check Tweed Waistcoat - BlueMen's Royal Blue Slim Fit 3-Piece Suit with Navy Blue Windowpane Check Tweed Waistcoat - Blue
Sold outSave £142.97Men's Grey Herringbone Tweed Jacket and Waistcoat with Slim Fit Navy Blue Trousers - Grey - Navy BlueMen's Grey Herringbone Tweed Jacket and Waistcoat with Slim Fit Navy Blue Trousers - Grey - Navy Blue
Save £135.00Men's Dark Grey Slim Fit Suit Jacket and Waistcoat with Light Grey Houndstooth Trousers - GreyMen's Dark Grey Slim Fit Suit Jacket and Waistcoat with Light Grey Houndstooth Trousers - Grey
Men’s Wool 3-Piece Slim Fit Formal Suit - Bond – Charcoal GreyMen’s Wool 3-Piece Slim Fit Formal Suit - Bond – Charcoal Grey
Men’s Wool Blend Double-Breasted Suit – BOND D/B - Charcoal GreyMen’s Wool Blend Double-Breasted Suit – BOND D/B - Charcoal Grey
Men’s 3 Piece Black Wool Pinstripe Suit - Roberto - BlackMen’s 3 Piece Black Wool Pinstripe Suit - Roberto - Black
Men’s 3-Piece Wool Slim Fit Formal Suit - James - Navy BlueMen’s 3-Piece Wool Slim Fit Formal Suit - James - Navy Blue
Men’s 3-Piece Wool Slim Fit Formal Suit - James - SierraMen’s 3-Piece Wool Slim Fit Formal Suit - James - Sierra
Men’s 3-Piece Navy Windowpane Check Suit with Double Breasted Waistcoat - Torino Model PictureMen’s 3-Piece Navy Windowpane Check Suit with Double Breasted Waistcoat - Torino Model Front Picture
Men's Tweed Check Green Formal Suit - Gaston Sage  Model PictureMen's Tweed Check Green Formal Suit - Gaston Sage  Model Front Picture
Save £147.60Men's Jefferson Navy Suit with Radika Waistcoat - Combined SetMen's Jefferson Navy Suit with Radika Waistcoat - Combined Set
Cavani
Men's Jefferson Navy Suit with Radika Waistcoat - Combined Set Sale priceFrom £99.97 Regular price£247.57
Sold outMen's Windowpane Check Slim Fit Suit - CONNOR - Pale BlueMen's Windowpane Check Slim Fit Suit - CONNOR - Pale Blue
Save £65.00Men's 2-Piece Glen Check Double Breasted Suit - CARIDI - BeigeMen's 2-Piece Glen Check Double Breasted Suit - CARIDI - Beige
Save £166.00Men's Windowpane Check Tweed Blue Suit - CODY - Navy Blue Model PictureMen's Windowpane Check Tweed Blue Suit - CODY - Navy Blue Model Front Picture
Cavani
Men's Windowpane Check Tweed Blue Suit - CODY - Navy Blue Sale price£133.97 Regular price£299.97
Sold outMen’s Wool Mix Double Breasted Slim Fit Suit – VICTORIOUS - Navy BlueMen’s Wool Mix Double Breasted Slim Fit Suit – VICTORIOUS - Navy Blue
Men’s Wool Mix Double Breasted Slim Fit Suit – VICTORIOUS - DoveMen’s Wool Mix Double Breasted Slim Fit Suit – VICTORIOUS - Dove
Men’s Wool Blend Double-breasted Suit – BOND D/B - Navy BlueMen’s Wool Blend Double-breasted Suit – BOND D/B - Navy Blue
Men’s Wool Blend Double-breasted Suit – BOND D/B - Midnight BlueMen’s Wool Blend Double-breasted Suit – BOND D/B - Midnight Blue
Men's Tailored Fit Formal Suit - MAYFAIR - Navy BlueMen's Tailored Fit Formal Suit - MAYFAIR - Navy Blue
Save £50.02Men's Slim Fit Formal Suit Set - Gorgeous - WhiteMen's Slim Fit Formal Suit Set - Gorgeous - White
Gorgeous
Men's Slim Fit Formal Suit Set - Gorgeous - White Sale price£69.97 Regular price£119.99
Save £50.02Men's Slim Fit Formal Suit Set - Gorgeous - Navy BlueMen's Slim Fit Formal Suit Set - Gorgeous - Navy Blue
Gorgeous
Men's Slim Fit Formal Suit Set - Gorgeous - Navy Blue Sale price£69.97 Regular price£119.99

Men’s Slim Fit Suits

Looking for modern, tailored men’s slim-fit suits that sharpen your look without blowing the budget? Shop Sirri’s collection of men’s slim-fit suits. Our suits are crafted in contemporary cuts across wool, linen and blended fabrics and are available in navy, grey and seasonal colours. Perfect for weddings, workwear, proms and smarter weekend occasions, our slim-fit range is cut closer to the body for a crisp silhouette while still allowing movement.

Why Choose a Slim Fit Suit

Our slim-fit suits are designed to give a modern, streamlined look with purposeful tailoring:

  • Clean, contemporary lines: narrower waist and tapered trousers for a tailored silhouette.

  • Versatile for any occasion: from office smart to wedding guest and evening wear (we carry slim-fit tuxedos and dinner suits).

  • Move-with-you construction: offering everything from stretch blends and considered cuts to durable materials and breathable fabrics that balance fit with comfort.

  • Affordable quality: carefully selected fabrics and finishing that deliver value without compromising on style.

What You’ll Find in Our Collection

  • Styles: 2-piece and 3-piece suits, slim tuxedos/dinner suits, slim wedding suits, single- and double-breasted suit options.

  • Fabrics: Pure wool, wool blends, cotton blends, linen blends, and polyester-viscose blends.

  • Colours: Ranging from classic navy, grey, charcoal grey, black, earthy tones, and jewel tones, plus seasonal shades and statement options.
  • Sizes: Short, regular and long inseam lengths.

 

Fit & Sizing: A Quick Checklist

  1. Use the size chart that comes with each product listing. Measurements such as chest, waist, shoulder and inside leg are the key numbers.

  2. Prefer a closer fit? Choose your measured chest size for a true slim look. Want a little extra room for layering? Go one size up.

  3. We recommend professional alterations for a perfect finish.

If you’re looking for the cut that best flatters your build, check out our in-depth right suit fit guide.

Materials & Care

  • Wool & blends: Dry clean recommended for longevity.

  • Linen & Cotton blends: Gentle dry clean or specialist hand-cleaning to reduce creasing.

  • Performance/stretch fabrics: Follow the garment care label.
     

Sirri slim-fit suits combine contemporary tailoring with accessible prices. Choose from wool and blended fabrics in essential colours – finished with flattering cuts, practical linings and precision stitching. Ideal for weddings, office wear and evenings out, our slim-fit collection makes a sharp wardrobe foundation. Master layering your slim-fit suit with Sirri.

 

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