Act fast: These M&S Ugg dupes are on sale for under-£25 - that's £100 CHEAPER than the ultra mini boot

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We might be coming into spring, but there's still a definite chill in the air, with many of us reaching for comfortable slippers to keep us cosy whilst at home. 

If you've been thinking about investing in a pair of Ugg boots, then hold fire, as eagle-eyed shoppers have found a surprisingly affordable dupe. Enter the M&S Collection Suede Faux Fur Flat Ankle Boots, which shoppers call 'Ugg's without the price tag'. 

With the Ugg Ultra Mini Boots costing £125, these Marks and Spencer look-a-likes will save you over £100 - now on sale from just £20. Available in black and sand, sizes are selling fast, so be sure to hot-foot it over to grab a pair in your size. 

If you're looking to keep your feet toasty whilst pottering around the house or even for short trips to the shops,then it's hard to beat the cosy appeal of the Ugg Classic Ultra Mini Boots.

If your budget doesn't stretch to the £125 price tag, savvy shoppers have found a very similar dupe in the Marks and Spencer Suede Faux Fur Flat Ankle Boots.

Reduced down from £35, the boots are now even cheaper - a steal at just £20. A similar dupe for the Ugg Ultra Mini, the winter booties boast a faux fur interior for a super cosy feel and special Insolia Flex technology to ensure your feet are correctly positioned for enhanced comfort.

The M&S Collection Suede Faux Fur Flat Ankle Boots has over 100 reviews and counting, with shoppers praising the 'short Ugg style boots'. 

With their flat, cleated sole for extra grip, suede exterior and soft faux fur interior, it's no surprise that they've drawn up comparisons from shoppers.

While the Marks and Spencer pair doesn't have Ugg's signature sheepskin lining, the boots do boast Insolia Flex, which shopper say makes all the difference to the comfort of the boot. 

Designed to position your feet correctly, it makes walking in flats more comfortable by ensuring your foot is correctly placed within your shoes, and improving the natural rotational movement of the ball of the foot.

Not just reserved for working-from-home days, the M&S ankle boots can also take you out of the house too; you can style them with leggings or jeans for casual off duty days.

Described as 'extremely comfy and warm' by M&S shoppers, the boots have become a hugely popular buy with several colours and sizes already sold out. 

One impressed shopper left a five-star review, writing: 'Great alternative to the ultra mini ugg for £100 less, just minus the label. I've sprayed them with suede protector, but I'm reluctant to wear them out in the rain. I wear them in the house as they are so comfy and to pop out in the car.' 

Another agreed, adding: 'Really happy with these boots, they are very comfortable and well made, I love the fact they are short and work really well with a pair of jeans.'

A third penned: 'Lovely warm and comfortable and a great price, bought 2 pairs, lovely with leggings, bit hard to get on first time but ok after that, true to size.'

If you prefer a taller boot that covers your ankles, the M&S Collection Suede Stain Resistant Faux Fur Lining Boots are another bargain buy, a steal at £39.50.