20% Off

20% off When You Refer a Friend at Theory

15% Off

15% off First order with Theory's Newsletter Sign-Up

Free Delivery

Free Delivery at Theory

Top Tip

Women's Spring Collection at Theory

Top Tip

Buy Now, Pay Later with Klarna at Theory

Top Tip

Men's Spring Collection at Theory

Top Tip

Men's New Arrival from £75 at Theory

Top Tip

28-Day Returns at Theory

Top Tip

Women's New Arrival from £75 at Theory

Multibuy Deal

2 for £200 on Selected Essential Duos at Theory

Top Tip

Women's Accessories from £80 at Theory

Popular Theory Discount Codes

Discount Last verified Redemptions
20% off When You Refer a Friend at Theory 12 Jun, 2024 Used 87 Times
15% off First order with Theory's Newsletter Sign-Up 12 Jun, 2024 Used 120 Times
Free Delivery at Theory 12 Jun, 2024 Used 5 Times
Buy Now, Pay Later with Klarna at Theory 12 Jun, 2024 Used 5 Times
Women's Spring Collection at Theory 12 Jun, 2024 Used 2 Times

Theory FAQs

ᐅ Where can I get a Theory discount code from?

Theory discount codes are not available all of the time, but they do pop up occasionally. The best way to ensure you don't miss out on a fashion discount is by staying tuned to Savoo. Aside from limited-time codes, look out for multi-buy deals and information about upcoming sales across women’s tops, fashion accessories, men’s shirts, women’s suits and more.

Another easy way to find the hottest deals is by registering for the Theory mailing list.

ᐅ Are Theory returns free?

Yes, you can return any Theory items you aren’t happy within 28 days. Whether it’s because you brought the wrong size or you have changed your mind, as long as it’s in a resalable condition you can return it. Follow the online steps to get a pre-paid return label with your return form, so it will cost you nothing to return your Theory haul.

ᐅ Can I exchange an item with Theory?

Unfortunately, at the moment, Theory does not offer exchanges. Returns are free, so if you have brought the wrong colour or size, we recommend returning it and repurchasing the right one for you.

ᐅ Will I be able to cancel my order with Theory?

Yes, you can cancel any order with Theory but it must be within an hour of being placed. Either cancel it by signing into your account or via the order confirmation page after submission.

ᐅ Can I track my Theory order?

Yes, you can. Sign into your account to track your order. If you aren’t a registered user, click the Track My Order link on the bottom menu. Enter your order number and your email address to check the status of your clothing haul.

ᐅ How can I pay for my Theory order?

You can pay for your Theory order using MasterCard, Visa, American Express, Maestro, Visa Electron, Visa Delta, PayPal, Alipay and UnionPay. If you want to treat yourself before payday, you can also shop now and pay later with Klarna.

How to save more money at Theory

Theory offers page guide. Banner shows a man and woman wearing suits in front of a wall

Update your wardrobe with versatile, sophisticated, and easy-to-wear fashion. Whether you want a blazer for work, a dress for a special occasion or a comfortable pair of sneakers for the gym, we can help you do it for less. Follow our expert tips and tricks to transform your look for less.

Refer a friend

When you refer a friend and help them update their wardrobe, you will both enjoy 20% off your next order. They will enjoy fantastic savings on their order, and you can enjoy 20% off if you spend £300 or more. Click the Refer A Friend link, and enter your email to generate a share link. When your friend uses your link, you will be sent a Theory discount count. There is no limit on the number of people you can refer and the savings you can enjoy.

Get the right size with the Theory guide

Get the right size every time and take the hassle out of online shopping with Theory. They have a handy size conversion chart for men and women as well as bust, waist, hip and arm measurements. Make sure your jumpsuit, shirt, trouser or coat or top purchase perfectly fits every time. Head to the bottom menu to see their Size Guide or find a link on a product page.

Don’t have the time to scan a size guide for the perfect fit? Open up the product you are interested in and click Find My Find. Enter your height, weight and body shape and this handy tool will tell you which size is best for you in that exact product.

How do I use a Theory discount code?

  1. Select your Theory discount code from those available at Savoo
  2. Click on the discount code to redeem it
  3. Copy your unique code from the pop-up window
  4. Follow the link to the Theory website
  5. Add men’s and women’s fashion to the bag
  6. Head to your bag when you are finished shopping
  7. Click Promo Code and paste in your code
  8. Click 'Apply'
  9. Continue to checkout

Theory discount code box in shopping basket

Recently Expired Theory Discount Codes & Deals

Up to £140 off Essential Duos Offer at Theory
Up to 60% off Women's Outlet at Theory
Up to 60% off Men's Outlet at Theory
Up to 60% off End of Season Sale at Theory
Up to 60% off Women's Coats at Theory