Duke + Dexter

Terms and Conditions

Terms applying to the Duke and Dexter offer


By making an advance payment to Duke and Dexter (DUKE AND DEXTER/us/we/our) in relation to this offer you agree to these legal terms (‘Terms’) applying between you and DUKE AND DEXTER and that English law and courts will apply. A separate contract between you and us is created for each advance payment you make (and the rewards that are related to that advance payment). These Terms are made in the English language. Please read these Terms carefully and get in contact if anything is unclear.


2.1       Our company information. Duke and Dexter, a company incorporated and registered in England with company number 08845470 whose registered address is at Upperton Farm, Upperton, Nr Watlington, OX49 5PB

2.2       How to contact us. If you have any questions on this offer please email [email protected]; if you have any questions on our goods or services, please visit the Duke and Dexter website, https://dukeanddexter.com/


DUKE AND DEXTER uses HyperJar to display offers in the HyperJar App and to act as our commercial agent to manage the collection, holding, processing and settlement of your advance payments to us and any subsequent redemptions and payments you make to us using your HyperJar payment card at our locations (subject to the restrictions as outlined further in Section 7 below).


DUKE AND DEXTER is the promoter and operator of this offer.

DUKE AND DEXTER has sole responsibility for:

  • the offer
  • these terms and conditions
  • honouring the advance payments you make (and the redemption of any related rewards) by allowing you to use your HyperJar payment card to purchase goods and services from our locations (subject to the restrictions stated in Section 7 below)
  • providing and paying the rewards accrued on your DUKE AND DEXTER balance
  • any goods and services we provide to you

If an offer includes any pricing information, any prices stated will clearly specify all applicable taxes, duties and delivery charges that may apply.


Participation in the offer is only open to HyperJar accountholders that hold a current HyperJar payment card.

We reserve the right to withdraw or amend the offer at any time, and to decline to accept any further advanced payments from you once the offer has been withdrawn.


We may impose limits on the offers we promote via HyperJar. These will be shown when you make an advance payment. The limits specified have the following meanings:

  • Minimum Advance Payment Amount: this is the minimum value of a single advance payment that you can make to DUKE AND DEXTER. Your advance payment must be equal to or higher than this value.
  • Maximum Total Amount: this is the maximum amount of advance payment you can have to DUKE AND DEXTER at any one time. You will need to redeem some of your balance before you can make any further advance payments.

You can redeem the advance payments you have made (and any related rewards) at https://dukeanddexter.com/ in the United Kingdom. If you use your HyperJar card at a DUKE AND DEXTER website that is outside of the United Kingdom the payments will be taken from your active electronic money balance in your HyperJar account and NOT from your DUKE AND DEXTER advance payment.


Each time you make an advance payment to DUKE AND DEXTER you are committing to spend this money at one of our locations, subject to the usage restrictions in Section 7. In return for this we will award you with a 4.8% AGR for up to 12 months. After 12 months the AGR will cease to apply, however you will still be able to redeem your advance payment and any rewards earned.

If you want to know more about how the AGR works, please read this FAQ

We may also, from time-to-time, provide you with the opportunity to earn extra rewards. Additional terms and conditions may apply to these rewards and these will be made available to you at the time the reward is offered to you.


When you spend (redeem) your advance payments and any related rewards (a “Redemption”) the rewards you have earned will be used first, followed by the advance payment amount you have paid and then, if enabled by you, funds from your active electronic money balance in your HyperJar account.

If a full or partial refund is made of any such Redemption, the order will be reversed so that your electronic money used (if any) will be credited first, followed by the advance payment, and finally the reward element.

You must have a HyperJar account and payment card to spend (redeem) your advance payments and any related rewards. Your advance payments, and any rewards earned on them, cannot be converted into cash.

If you want to close your HyperJar account, you must spend (redeem) your advanced payments to us and any accrued rewards before you do so, otherwise you will lose all of those funds and any rewards you have accrued will automatically expire.


Should you have any problems with the goods or services you receive when you redeem your advance payments, or pay for, using your HyperJar card, the DUKE AND DEXTER standard terms and conditions will apply. This can be found at:



If you choose to share any of your personal data with DUKE AND DEXTER you need to be aware of DUKE AND DEXTER’s privacy policy as this explains how your Personal Data is stored, used and shared and how you can control and delete it. You can find the DUKE AND DEXTER privacy policy at:


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