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Welcome to Theory
Sign-up to our mailing list, and receive 15% off your next order.
By entering your information above, you agree to receive regular emails about our latest collections, exclusive offers, and more. You can withdraw your consent at any time. Read our privacy policy for more details. Offer valid in the UK only. Not valid for existing email subscribers. Exclusions apply.
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Exclusions
Promo T&Cs
WELCOME OFFERFor new subscribers only. Discount will be applied when your unique promotional code is entered at checkout. Offer valid online at theory.com in the UK only. Offer not valid on sale, discounted or Theory Archive styles. Offer cannot be combined with any other promotional offer, redeemed for cash, or applied to previous purchases. Offer terms are subject to change.
REFER-A-FRIEND OFFER
Offer valid for one month from date of issue for friend referred, and four months for referee. Discount will be applied when your unique promotional code is entered at checkout. Offer valid online at theory.com in the UK only. Offer not valid on sale, discounted or Theory Archive styles. Offer cannot be combined with any other promotional offer, redeemed for cash, or applied to previous purchases. Offer terms are subject to change.
INFLUENCERS
Discount will be applied when the promotional code is entered at checkout. Offer valid in Theory retail stores and online at theory.com in the UK only. Offer not valid on sale, discounted or Theory Archive styles. Offer cannot be combined with any other promotional offer, redeemed for cash, or applied to previous purchases. Offer terms are subject to change.
ESSENTIAL DUOS
Choose two selected womenswear or menswear styles, in any size or colour to receive an additional discount. Discount will be auto-applied at checkout. Offer valid online at theory.com in the UK only. Offer cannot be combined with any other promotional offer, redeemed for cash, or applied to previous purchases. Offer terms are subject to change.
ARCHIVE + SALE + OUTLET
Offer valid on selected styles in Theory retail stores, and at theory.com in the UK only. Offer cannot be combined with any other promotional offer, redeemed for cash, or applied to previous purchases. Offer terms are subject to change.
GIFT WITH PURCHASE
Receive one complimentary Theory tote bag with any order over £350 including VAT purchased from 11th September and is valid while supplies last. The gift is at the discretion of Theory and is subject to availability at the time of purchase. This Promotion will automatically be applied at checkout for qualifying orders and no code is required. Offer is valid online at https://uk.theory.com/?lang=en_GB and in selected London boutiques. Select merchandise is excluded. Theory will not be held responsible for any delay in shipping or reception of the Gift. Theory reserves the right to cancel the Gift if the Theory order is cancelled before the Gift is dispatched. In the case that the customer returns an item that qualifies for the Gift, the customer must include the Gift in the return. The Gift may not be substituted for an equivalent product, or an equivalent cash amount, or gift card, or applied to previous purchases. For questions, please contact customer.care@uk.theory.com. Theory reserves the right to cancel or amend these terms at any time and without prior notice. These terms do not affect your statutory rights. In addition to these terms, the Website’s T&Cs shall also apply which can be found here. In the event of a conflict between these terms and the Website’s T&Cs, these terms shall prevail. For details as to how Theory may use personal data, please consult the privacy policy here.