M&S School Uniform 20% Off: What’s Included & The 28-day Return Rule To Know

If you're still filling gaps in the school uniform drawer before the new term, M&S has brought back its 20% off school uniform offer, with the promotion starting on the 20th of August for a limited time.

The M&S school uniform 20% off deal covers a broad selection of everyday schoolwear, and when I checked on the 24th of August the reduction was still showing across shirts, polos, trousers, skirts, knitwear, socks and many school shoes.

The timing is useful for anyone who deliberately left the back-to-school shop until nearer the start of term, perhaps to avoid buying clothes before a late-summer growth spurt. M&S isn't normally the cheapest place to buy generic school uniform, so a 20% discount doesn't automatically make every item the best-value choice.

The more useful question is whether the lower price brings the particular M&S products you need close enough to supermarket prices to make their fit, fabric or growing-room features worth paying for.

There is also a returns detail worth knowing before you fill the basket. M&S offered an extended 100-day school uniform return period for qualifying uniform bought between the 25th of June and the 15th of August, but purchases from the 16th of August onwards fall back to its standard 28-day school uniform return period. That means orders placed during this latest 20% promotion don't get the earlier 100-day window.

What does the M&S school uniform sale include?

The M&S school uniform sale covers a broad range of everyday uniform, and the retailer's current schoolwear pages show 20% reductions across many shirts, polos, trousers, skirts, pinafores, jumpers, socks and school shoes.

The range covers different ages, fits and school colours, although individual prices rise with size on many products.

The information M&S supplied The Penny Pincher for the promotion, highlights everyday multipacks alongside features designed to help the clothes cope with repeated wear and washing.

These include StayNew technology on selected products, stain and weather-resistant finishes, easy-iron fabrics, adjustable waists and hems that can provide extra growing room.

Those features won't matter equally to every family, so it's worth deciding where you'd actually benefit from them rather than buying the entire uniform from one retailer.

Selected school shoes are also reduced, which could be more significant in pounds than saving 20% on a pack of polo shirts. For example, M&S leather bow school shoes that start at £28 before the promotion are currently showing from £22.40, a saving of £5.60 at the lowest price point.

Not every school-related shoe or trainer shown on the site carries the reduction, so check the individual listing before assuming it's included.

How much can you save with the M&S school uniform 20% off deal?

A 20% reduction takes £2 off every £10 you would normally spend, so the saving becomes more noticeable if you're buying several packs or a pair of school shoes. The current M&S listings and the product information supplied for the offer give a useful idea of what some common uniform basics cost during the promotion.

Prices can increase with age or size, so compare the exact option your child needs before budgeting from the lowest advertised figure.

School uniform example	Usual starting price	Price with 20% off	Saving
3 pack easy-iron school shirts	£9	£7.20	£1.80
2 pack slim-leg school trousers	£11	£8.80	£2.20
2 pack pleated pinafore dresses	£12	£9.60	£2.40
3 pack school polo shirts	£7	£5.60	£1.40
Leather bow school shoes	£28	£22.40	£5.60
7 pack ankle school socks	£7	£5.60	£1.40

The table also shows why it isn't enough to look at the percentage alone. Saving £1.40 on a £7 pack is useful if you wanted that pack anyway, but it doesn't make sense to spend more simply because a red discount label is attached to it.

Work from your child's actual uniform list, check what still fits from last term, then use the promotion for the gaps that still need filling.

Is M&S school uniform worth paying more for?

M&S school uniform can cost more than the cheapest supermarket alternatives, but some of its ranges offer features that may help you get longer from them. Adjustable waists, extra hem allowance, crease-resistant finishes and stain resistance are particularly relevant for trousers and skirts, where fit and durability can matter as much as the initial purchase price.

Independent parent feedback is mixed rather than universally positive, which is worth bearing in mind. A current Mumsnet school uniform guide selected M&S regular-leg school trousers and pleated skirts among its recommended products, while recent Reddit discussions include parents praising the adjustable waists, fit and durability of M&S trousers; other parents say they prefer cheaper supermarket uniform for everyday basics and spend more only on selected pieces.

That mixed approach probably makes more financial sense than assuming one retailer has to supply everything. You might decide an M&S pair of trousers is worth buying because the adjustable waist and extra growing room suit your child, while plain polo shirts can come from whichever supermarket is cheapest.

The 20% reduction gives you a better opportunity to make that choice without paying the normal M&S price.

Check your school's uniform policy before buying

Before ordering any new uniform, check the latest uniform policy on your school's website because the rules on compulsory branded clothing in England are changing from the 1st of September. Schools must limit compulsory branded items to no more than 3 for primary pupils, while secondary and middle schools can require a fourth item if one of the compulsory pieces is a tie.

That could give families more scope to buy generic shirts, trousers, skirts, jumpers and PE kit from retailers such as M&S rather than being tied to a particular school supplier. The Department for Education also says schools should make second-hand uniform available and publish information about how parents can get it.

It is worth checking before spending because an old uniform list may no longer reflect what will actually be compulsory once the new rules take effect. If your school has changed its requirements, you may be able to reuse more of what you already own or buy a generic alternative.

That saving could be considerably larger than the 20% discount available on a new item.

Don't replace school uniform that still has life left in it

A new school year doesn't automatically require an entirely new set of clothes. Before using the M&S school uniform 20% off promotion, get last term's shirts, trousers, skirts, jumpers and PE kit out and check what still fits, what can be let down and what is genuinely past using. You may find the shopping list is much shorter than expected.

I've covered more ways to cut the bill in my school uniform deals guide and my guide to school uniform grants, including buying second-hand uniform and checking whether financial help is available locally. I also have separate guides to Aldi's £5 school uniform bundle and Tesco's school uniform promotion, which are useful for comparing the sort of prices offered by the lower-cost supermarket ranges.

There is nothing wrong with mixing retailers either. Buying an M&S item where the fit or adjustable features work particularly well, then using cheaper supermarket multipacks for the basics, can give you the best balance between price and wear. You don't earn a prize for having every label in the uniform drawer match.

Can you get cashback as well as the 20% M&S discount?

There may be an opportunity to earn cashback on an online M&S order, but check the terms carefully before assuming the school uniform purchase will qualify. TopCashback offers M&S cashback with different rates depending on the product category, including a lower rate for sale items, while Quidco also lists separate M&S rates for standard purchases and sale items.

Rakuten is also worth checking, particularly if you've never used it before. When I checked, the M&S cashback rate was as low as 0.75% for some purchases, which on its own isn't going to make a huge difference to a school uniform order. The more interesting part for new Rakuten members is its current referral offer.

If you sign up to Rakuten using my referral link and complete at least £60 of qualifying spending through Rakuten within your first 90 days, you can currently receive an additional £25 cashback bonus. The qualifying spend doesn't have to be made in one transaction, so if you're spending £60 or more on school uniform, or you're likely to spend that amount across other Rakuten retailers during the 90-day period, the £25 bonus could make a much bigger dent in the overall cost than the standard M&S cashback rate.

For example, £25 back against £60 of purchases is a sizeable bonus before you even include any normal cashback earned on the qualifying transactions. Don't spend extra simply to reach the threshold, though; this works best if you were already planning to spend the money on school uniform or other eligible purchases during that period.

As with any cashback site, tracking isn't guaranteed and purchases normally need to meet the retailer and cashback service's terms before the money becomes payable. I'd also compare Rakuten with TopCashback and Quidco before ordering, as cashback rates change regularly and a different service may offer the better standard rate on the day.

If you haven't used Rakuten before, you can sign up using my Rakuten referral link to take advantage of the £25 new-member offer. Check the current referral terms before joining, particularly the qualifying-spend requirement and 90-day deadline, in case Rakuten changes the promotion. If you use JamDoughnut for gift-card cashback, you'll find M&S listed. Cashback rates can change, but if you are buying uniform, a gift card for M&S, bought through this type of instant cashback gift card service, can be used both instore and online, and is the cashback method I use my often, for making M&S purchases.

I generally treat cashback as the extra saving rather than the reason to make the purchase. If a £50 uniform order is already the best option for what you need, even a small amount back is useful. If another retailer sells the same suitable basics for £35, a cashback rate isn't going to make the £50 basket cheaper.

When does the M&S 20% off school uniform sale end?

M&S hasn't given a fixed end date in the information supplied for this latest promotion. The retailer says the 20% school uniform offer began on the 20th of August and is available for a limited time, while its official offers page was still showing 20% off school uniform when checked on the 24th of August.

That doesn't mean you need to rush out and buy things you haven't checked, but it does mean I wouldn't assume the discount will still be there several weeks from now! The Irish M&S site were ending the promo on the day I'm writing this post, but the UK site just states its ending soon... Sizes and colours can also become harder to find as the new term gets closer, particularly if you're looking for a specific fit, the the earlier the better normally so you don't miss out when everyone strats to to panic buy, and I'd recommend checking the current price online before making a special journey to a store, just in case the offer has now ended.

One final point is worth keeping in mind if you are buying ahead in a larger size. Because purchases made during this late-August promotion have the standard 28-day school uniform returns window, there is less room to buy speculatively and return things much later if the fit isn't right. Check sizing while you are still comfortably inside that period rather than leaving the bag untouched until well into the new term.

Is the M&S school uniform 20% off deal worth using?

The M&S promotion is most useful if you already wanted something from its schoolwear range, particularly trousers, skirts, shirts or shoes where the 20% reduction takes a decent amount off the normal price. It still won't beat every supermarket on school clothing prices, so compare like with like and think about fit, durability and whether features such as adjustable waists or extra hem room have value for your child.

I'd also check what your school actually requires before buying, especially with the new limit on compulsory branded uniform coming into force in England from the 1st of September. Reusing what still fits, buying second-hand branded pieces and then filling the genuine gaps with discounted generic uniform could save more than replacing everything in one large back-to-school order.

If M&S has the size and style you already planned to buy, the current 20% reduction is a useful opportunity to pay less for it. Just check the final price against other retailers and try everything on promptly, because the 28-day returns window is the part of this late-summer offer that would be very easy to overlook.

M&S school uniform frequently asked questions

Is M&S school uniform 20% off now?

Yes, M&S is currently offering 20% off a wide selection of school uniform. The promotion began on the 20th of August and was still showing on the M&S website when I checked on the 24th of August. M&S describes it as a limited-time offer.

When does the M&S 20% off school uniform sale end?

M&S hasn't published a fixed closing date in the information supplied for this promotion. It says the 20% school uniform discount is available for a limited time, and the offer was still live when checked on the 24th of August. If you need a particular size or colour, check that the discount is still showing before ordering.

Does the M&S school uniform 20% off deal include shoes?

Many school shoes are currently showing a 20% reduction on the M&S website. This includes a number of M&S leather school shoes, although not every shoe or trainer on the schoolwear pages is necessarily reduced. Check the individual product page before buying.

Is M&S school uniform worth the price?

M&S school uniform generally costs more than the cheapest supermarket ranges, so price alone won't always favour M&S. Its trousers and skirts include features such as adjustable waists, crease-resistant fabrics and hems designed to provide growing room, while independent parent feedback is particularly positive about some of its trousers and school shoes. The 20% discount narrows the price difference, so compare the exact items you need rather than replacing everything automatically.

Can I return M&S school uniform bought in the 20% off offer?

Yes, but purchases made from the 16th of August onwards are covered by M&S's standard 28-day school uniform return period. The earlier 100-day school uniform returns period applied to qualifying purchases made between the 25th of June and the 15th of August. Your statutory consumer rights are separate from M&S's goodwill returns policy.

Can I get cashback on M&S school uniform?

Potentially, so it's worth checking a cashback service before ordering online. TopCashback and Quidco currently list M&S cashback, but the rate depends on the type of purchase and promotional or sale items can have different rates. Always read the cashback terms before paying because using an unapproved discount code or another promotion can affect eligibility.