• Free shipping for orders over £60
  • Next Day Delivery Available
  • Clearpay and Klarna Available
Stone Mongrel Safety Boots with a zip and laces, black socks with the Mongrel logo, and a blurred background.

Aussie Made Quality Since 1930

The 561 Safety ZipSider from Mongrel Boots

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Brands

  • Steel Blue Mens Work Boots Southern Cross Zip S3 - SAND - BIG Boots UK
    Steel Blue Mens Work Boots Southern Cross Zip S3 - SAND
    Regular price £127.95
  • Steel Blue Mens Work Boots Parkes Zip Scuff S3
    Steel Blue Mens Work Boots Parkes Zip Scuff S3 - SAND
    Regular price £118.99
  • Steel Blue Southern Cross Zip
    Steel Blue Mens Work Boots Southern Cross Zip S3 - SLATE
    Regular price £127.95
  • Steel Blue Work Boots Southern Cross Zip Scuff S3 - GRANITE
    Regular price £134.99
  • Steel Blue Mens Work Boots Parkes Zip Scuff S3 - GRANITE
    Regular price £129.99
  • Steel Blue Hobart Scuff SAND - PRE ORDER NOW - BIG Boots UK
    Steel Blue Hobart Scuff SAND
    Regular price £118.99
  • Steel Blue Southern Cross Zip Scuff - FIX RADIO Safety Boots S3
    Regular price £127.95
  • Steel Blue Mens Work Boots Southern Cross Zip GraphTEC™ Scuff S3 - BLACK - BIG Boots UK
    Steel Blue Mens Work Boots Southern Cross Zip GraphTEC™ Scuff S3 - BLACK
    Regular price £127.95

Shop By Trade

Choose multiple items to get 15% off

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Popular

  • Mongrel K9 Dealer boots
    Mongrel K9 Dealer Boot - Brown
    Regular price £139.95 (inc. VAT) £116.63 (ex. VAT)
  • Mongrel K9 Non Safety Work Boot - Vintage Brown - BIG Boots UK
    Mongrel K9 Dealer Boot - Vintage Brown
    Regular price £139.95 (inc. VAT) £116.63 (ex. VAT)
  • Mongrel K9 Non Safety Work Boot - Black - BIG Boots UK
    Mongrel K9 Dealer Boot - Black
    Regular price £139.95 (inc. VAT) £116.63 (ex. VAT)
  • Mongrel K9 Non Safety Work Boot - Cloudy Grey - BIG Boots UK
    Mongrel K9 Dealer Boot - Cloudy Grey
    Regular price £139.95 (inc. VAT) £116.63 (ex. VAT)
  • Steel Blue Hobart Scuff SAND - PRE ORDER NOW - BIG Boots UK
    Steel Blue Hobart Scuff SAND
    Regular price £118.99
  • Steel Blue Hobart
    Steel Blue Hobart Scuff Rustic Brown
    Regular price £118.99
  • Hard Yakka BRUMBY - Non Safety - BIG Boots UK
    Hard Yakka BRUMBY Dealer Boots - Non Safety
    Regular price £79.99 (inc. VAT) £66.66 (ex. VAT)
  • Hard Yakka OUTBACK S3 - BIG Boots UK
    Hard Yakka OUTBACK Dealer Boots S3
    Sale price £84.99
    Regular price £95.99
    -£11.00

Let customers speak for us

from 1245 reviews
Work boots

Brought a pair of steel blue work boots and they are excellent very comfortable and hard wearing, definitely worth the money and will be buying these boots in the future, highly recommend buying your steel blue boots from Big boots uk very helpful and no quibble return policy

Carl Bowker
Steel Blue Mens Work Boots Southern Cross Zip S3 - SAND
Steel Blue Mens Work Boots Southern Cross Zip S3 - SAND

Great boots, very comfortable. Fast service and delivery.

Andy Smith
Steel Blue Work Boots Southern Cross Zip Scuff S3 - GRANITE
Steel Blue Work Boots Southern Cross Zip Scuff S3 - GRANITE
Brilliant

I won’t ever wear any other work boots. Never rubbed at all and definitely worth the money

M.D.
Steel Blue Mens Work Boots Southern Cross Zip S3 - SAND
Steel Blue Mens Work Boots Southern Cross Zip S3 - SAND
Mongrel K9 Boots

Perfect fit very comfortable good quality boots. Glad I bought them thanks

Adrian Roberts
Mongrel K9 Dealer Boot - Brown
Mongrel K9 Dealer Boot - Brown
Steel Blue Hobart

Great boots and a great family run business, delivery was fast and items were perfect. Will be ordering with Big Boots UK again!

Ruairi OKane
Steel Blue Hobart Scuff SAND
Steel Blue Hobart Scuff SAND
Boots

Very good purchase
Best boots my hubby bought for work

Pamela Kerley
Steel Blue Mens Work Boots Parkes Zip Scuff S3 - Black
Steel Blue Mens Work Boots Parkes Zip Scuff S3 - Black
Jersey delivery

Out for delivery same day as I ordered, arrived in Jersey within 3 days.

Excellent service thank you

Reece Dornan
Steel Blue Mens Work Boots Parkes Zip Scuff S3 - SAND
Steel Blue Mens Work Boots Parkes Zip Scuff S3 - SAND

Mongrel Boot Wax

France’s White
Mongrel Boot Wax
Mongrel Boot Wax
Great service, great boots

Couldn’t recommend yourselves more second time using the shop, first for some steel blues and now for some mongrel boots, certainly won’t be the last time using!

Aaron Gray
Mongrel 561 Side Zip Safety Boots - STONE
Mongrel 561 Side Zip Safety Boots - STONE

Awesome next day delivery boots are so comfy well impressed

Nick
Steel Blue Mens Work Boots Southern Cross Zip S3 - SAND
Steel Blue Mens Work Boots Southern Cross Zip S3 - SAND
Steel blue work boots

The best work boots I’ve ever had, so comfortable when they are broken in !!

Rob
Steel Blue Work Boots Southern Cross Zip Scuff S3 - GRANITE
Steel Blue Work Boots Southern Cross Zip Scuff S3 - GRANITE
Very Comfortable

The only boots I have owned where you hardly feel the steel toe . Very impressed

Anonymous
Steel Blue Hobart Scuff SAND
Steel Blue Hobart Scuff SAND
Big Boots

One word “ EXCELLENT “

Salim Moosa
Steel Blue Bamboo Socks
Steel Blue Bamboo Socks

Great boots as usual

philip weekes
Steel Blue Mens Work Boots Southern Cross Zip S3 - SLATE
Steel Blue Mens Work Boots Southern Cross Zip S3 - SLATE
Second pair

This is the second pair of these boots I've had, they're very comfortable straight out of the box. Although after a few weeks they do start to need wearing in. After another week or so they've become very comfortable again. I'll keep buying these boots again and again

Sam Hunter
Steel Blue Mens Work Boots Southern Cross Zip S3 - SLATE
Steel Blue Mens Work Boots Southern Cross Zip S3 - SLATE

  • NEXT DAY DELIVERY

    Order before 2pm and select express postage and your order will arrive the next business day.

  • FREE SHIPPING

    Free UK shipping for orders over £60, this also includes free exchanges and returns.

  • CUSTOMER SERVICE

    We are available from Monday to Friday to answer your questions.

Blogs

Best Women's Work Boots for Office and Construction in 2026: Complete Buying Guide

Best Women's Work Boots for Office and Construction in 2026: Complete Buying Guide

Find the perfect women's work boots for office and construction work in 2026. Our complete guide covers safety features, style options, and top bra...
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Why Are Australian Safety Boots So Popular in the UK?

Why Are Australian Safety Boots So Popular in the UK?

Australian work boots are built to last – and UK tradies, farmers and workers can’t get enough of them. Discover the history of Mongrel, Redback, R...
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Mongrel 561 Safety Boots: Now Available in the UK

Mongrel 561 Safety Boots: Now Available in the UK

Mongrel 561 Side Zip Safety Boots have arrived in the UK and is now available to pre-order. Made in Australia, this safety boot combines a tough Vi...
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