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Underwear

Our selection of work underwear and base layers is designed for professionals who face demanding conditions and long hours on the job. These garments provide essential warmth, moisture management, and all-day comfort, and many can be customised with embroidery or print to support your branded uniform requirements.

Ideal for industries such as construction, transport, warehousing, and security, our thermal underwear includes long-sleeved tops, leggings, and briefs from trusted brands like Portwest, Regatta, and Fristads. These base layers feature soft-touch materials, stretch-fit fabrics, and flat seams for added comfort and mobility.  Some styles are also EN Certified Flame Retardant, Anti-Static or Arc Flash protective clothing

Looking to outfit your team? Our in-house embroidery and print services let you add logos or team names to suitable garments — especially thermal tops that may be worn as visible outer layers in some work environments. It’s a great way to stay professional, warm, and on-brand, even in the coldest conditions.

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  • Portwest B120 Thermal T-Shirt S/SPortwest B120 Thermal T-Shirt S/S

    Portwest B120 Thermal T-Shirt S/S

    A traditional t-shirt cut that offers optimum warmth at all times. The material construction allows the skin to breathe if conditions become too warm. The round neck makes it ideal for wearing as an under-garmentThe PWB120 features: Provides insulation and thermal protection Designed with...
    £7.50
    £7.50
    • Black
    • Navy
    2 Days
    in stock
  • Portwest B121 Thermal TrousersPortwest B121 Thermal Trousers

    Portwest B121 Thermal Trousers

    The B121 creates a layer of warmth around the lower body. The soft poly-cotton fibres and fabric knitting mean that heat is trapped in. Cuffed hem and elasticated waist provide a comfortable fit.The PWB121 features: Provides insulation and thermal protection Designed with a comfort...
    £7.85
    £7.85
    • Black
    • Grey
    • Navy
    • White
    2 Days
    in stock
  • Xcelcius XFRC101 FR Men's Long Sleeve TopXcelcius XFRC101 FR Men's Long Sleeve Top

    Xcelcius XFRC101 FR Men's Long Sleeve Top

    The Xcelcius FR Men's Long Sleeve Top features:220gsm 60% Protex modacrylic, 40% cotton.Interlock knit construction.FR elastication at collar and cuffs.Visible FR standards transfer.Conforms to the following:EN ISO 11612Sizes Available: S,M,L,XL,2XL,3XLRelated Pulsar Products:XFRC103
    £32.35
    £32.35
    • Black
    5 Days
    in stock
  • Portwest B131 Base Layer TrousersPortwest B131 Base Layer Trousers

    Portwest B131 Base Layer Trousers

    These smooth leggings have low profile seam construction for ultimate comfort. The PWB131 features: Provides insulation and thermal protection Breathable, high-wicking, moisture management Designed with a comfort fit Excellent moisture wicking properties Available in sizes up to 4XL Retail box which aids presentation for...
    £10.75
    £10.75
    • Black
    • Charcoal
    2 Days
    in stock
  • Fort 803 Thermal Long JohnsFort 803 Thermal Long Johns

    Fort 803 Thermal Long Johns

    When a blast of Arctic air hits the country, you'll be glad you left home in your Thermal Long Johns. Made from brushed polycotton, they feel soft to the touch and warm in the bitterest weather. With elasticated waist and a front opening, they're...
    £5.95
    £5.95
    • Denim
    • White
    4 Days
    in stock
  • Beeswift CARC22 Arc Compliant Long SleeveBeeswift CARC22 Arc Compliant Long Sleeve

    Beeswift CARC22 Arc Compliant Long Sleeve

    The Beeswift CARC22 Arc Compliant Long Sleeve T-Shirt is a flame-retardant, anti-static undergarment designed to deliver base-layer protection in hazardous industrial environments. With its soft, inherently flame-resistant fabric and ARC flash compliance, it's ideal for workers exposed to thermal risks while requiring all-day comfort....
    £32.35
    £32.35
    • Navy
    3 Days
    in stock
  • Kariban KB800 BoxersKariban KB800 Boxers

    Kariban KB800 Boxers

    Boxers. Elasticated waistband with contrast piping.. 160 gsm. 95% cotton/5% elastane.
    £4.85
    £4.85
    • Black
    • White
    2 Days
    in stock
  • PULSAR BZ1503 Blizzard Mens -15 Deg Thermal Long PantsPULSAR BZ1503 Blizzard Mens -15 Deg Thermal Long Pants

    PULSAR BZ1503 Blizzard Mens -15 Deg Thermal Long Pants

    The PULSAR Blizzard Men's -15 Deg Thermal Long Pants features:PULSAR Blizzard thermals are manufactured using the world renowned brand of viscose, Viloft. The inside of the fabric is brushed to increase warmth and moisture wicking performance when in contact with the skin.Viloft is also...
    £28.00
    £28.00
    • Navy
    • White
    5 Days
    in stock
  • PULSAR BZ1501 Blizzard Mens -15 Deg Thermal TopPULSAR BZ1501 Blizzard Mens -15 Deg Thermal Top

    PULSAR BZ1501 Blizzard Mens -15 Deg Thermal Top

    The PULSAR Blizzard Men's -15 Deg Thermal Top features:PULSAR Blizzard thermals are manufactured using the world renowned brand of viscose, Viloft. The inside of the fabric is brushed to increase warmth and moisture wicking performance when in contact with the skin.Viloft is also blended...
    £26.95
    £26.95
    • Navy
    • White
    5 Days
    in stock
  • Fort 801 Thermal Long Sleeve VestFort 801 Thermal Long Sleeve Vest

    Fort 801 Thermal Long Sleeve Vest

    Winters are a lot more enjoyable when you're wearing a warming base layer. Our brushed polycotton Thermal Long-Sleeve Vest is soft and cosy. It's ideal for farmers, fishermen, country sports enthusiasts, security personnel, and anyone who has to be outdoors for long periods. Sold...
    £5.95
    £5.95
    • Denim
    • White
    4 Days
    in stock
  • Portwest FR14 Flame-Resistant Anti-Static Leggings

    Portwest FR14 Flame-Resistant Anti-Static Leggings

    Designed for cooler conditions to keep the wearer warm, comfortable and safe. Elasticated waistband allows freedom of movement and the ribbed hem cuffs help trap in heat.The PWFR14 features: Inherent flame resistant qualities will not diminish with washing Protection against radiant, convective and contact...
    £32.75
    £32.75
    • Navy
    2 Days
    in stock
  • Asquith & Fox AQ094 Men's classic boxersAsquith & Fox AQ094 Men's classic boxers

    Asquith & Fox AQ094 Men's classic boxers

    The Asquith & Fox AQ094 Men's classic boxers features: Loose cotton boxer for men with false fly detail. Self-fabric gathered elasticated waist for user comfort. Washing Instructions Domestic wash at 40c. The Asquith Fox men's classic boxers, made from 100% cotton are a staple...
    £5.35
    £5.35
    • Black
    • White
    2 Days
    in stock
  • Portwest DX480 Zip Base LayerPortwest DX480 Zip Base Layer

    Portwest DX480 Zip Base Layer

    The DX4 Zip Base Layer Top is lightweight and breathable which assists with perfect body temperature control. The high stretch, highly durable nylon fabric complements the body mapped design. Offering raglan sleeves for fluid movement and comfort. The full front zip with chin guard...
    £45.90
    £45.90
    • Black
    • Metro Blue
    2 Days
    in stock
  • Onna by Premier NN370 Ladies Unstoppable Fresh Underscrub Base LayerOnna by Premier NN370 Ladies Unstoppable Fresh Underscrub Base Layer

    Onna by Premier NN370 Ladies Unstoppable Fresh Underscrub Base Layer

    Designed to feel like a second skin, this women’s baselayer is engineered in breathable, performance fabrics that wick away perspiration, keeping you warm and comfortable through winter and cool and dry in summer. The natural mint deodorising finish helps you stay fresh. Wear it...
    £14.35
    £14.35
    • Black
    • Heather Grey
    • Heather Navy
    • White
    2 Days
    in stock
  • Beeswift CARC24 Arc Compliant Long JohnBeeswift CARC24 Arc Compliant Long John

    Beeswift CARC24 Arc Compliant Long John

    The Beeswift CARC24 Arc Compliant Long Johns provide essential base-layer protection in hazardous environments, combining inherent flame retardancy, anti-static properties, and arc flash compliance. Designed for industrial professionals, these undergarments offer reliable safety without compromising comfort or flexibility. Previously branded as Click ARC. Key...
    £28.40
    £28.40
    • Navy
    3 Days
    in stock
  • Xcelcius XARC01 FR-AST-ARC Men's Long Sleeve TopXcelcius XARC01 FR-AST-ARC Men's Long Sleeve Top

    Xcelcius XARC01 FR-AST-ARC Men's Long Sleeve Top

    The Xcelcius FR-AST-ARC Men's Long Sleeve Top features:220gsm 60% Protex, 38% Cotton, 2% antistatic fibres.Interlock knit construction.Red FR aramid thread used throughout to increase seam strength.Modern cut for improved wearer fit.FR elastication at collar and cuffs.ARC performance can be increased by wearing in conjunction...
    £51.80
    £51.80
    • Black/Red
    5 Days
    in stock
  • PULSAR BZ1550 Blizzard Womens -15 Deg Thermal TopPULSAR BZ1550 Blizzard Womens -15 Deg Thermal Top

    PULSAR BZ1550 Blizzard Womens -15 Deg Thermal Top

    The PULSAR Blizzard Women's -15 Deg Thermal Top features:PULSAR Blizzard thermals are manufactured using the world renowned brand of viscose, Viloft. The inside of the fabric is brushed to increase warmth and moisture wicking performance when in contact with the skin.Viloft is also blended...
    £26.95
    £26.95
    • White
    5 Days
    out stock
  • Portwest B171 Dynamic Air Baselayer Legging

    Portwest B171 Dynamic Air Baselayer Legging

    The PWB171 features: Wicking, cooling and drying capabilities Seamless body mapped panelling for breathability and comfort Provides insulation and thermal protection Fast drying Contrast colour stitching for added style Designed with a comfort fit Breathable, high-wicking, moisture management Retail box which aids presentation for...
    £12.95
    £12.95
    • Charcoal
    2 Days
    in stock
  • Xcelcius XFRC103 FR Men's Long PantXcelcius XFRC103 FR Men's Long Pant

    Xcelcius XFRC103 FR Men's Long Pant

    The Xcelcius FR Men's Long Pant features:220gsm 60% Protex modacrylic, 40% cotton.Interlock knit construction.FR elastication at ankles.Fly access on long pants.Visible FR standards transfer.Conforms to the following:EN ISO 11612Sizes Available: S,M,L,XL,2XL,3XLRelated Pulsar Products:XFRC101
    £32.35
    £32.35
    • Black
    5 Days
    in stock
  • Fort 802 Thermal Short Sleeve VestFort 802 Thermal Short Sleeve Vest

    Fort 802 Thermal Short Sleeve Vest

    This is the warm and cosy base layer for outdoors enthusiasts who like a bit more freedom of movement in their arms. Our Thermal Short-Sleeve Vest is made from the same air-trapping brushed polycotton. The only difference is in the length of the sleeves....
    £4.75
    £4.75
    • Denim
    • White
    4 Days
    in stock