Identify why the item is going back

A wrong size chosen by the buyer is different from an item arriving in the wrong size, and both differ from a fault. Describe the actual problem accurately. That helps the retailer use the appropriate process instead of treating every request as a voluntary change of mind.

For an ordinary in-store purchase with nothing wrong, a change-of-mind return generally depends on the shop's policy. Eligible distance purchases have statutory cancellation rights, subject to exceptions. Faulty or misdescribed goods raise separate rights. GOV.UK's returns guidance explains these distinctions; a store policy should not be mistaken for the whole legal position.

Check what an exchange involves

Ask whether the replacement is reserved, whether the price stays the same and whether another delivery charge applies. If the shop refunds and asks you to place a fresh order, that is a new purchase process rather than a simple swap. A previous voucher may not apply again.

For a hypothetical £40 item bought with a 20% reduction, you paid £32. If a new order costs £40 because the promotion has ended, returning and reordering could require £8 more. A direct exchange may have different terms, so clarify the route before assuming the same price will be preserved.

Do not confuse store credit with a cash refund

A credit note or gift card keeps value with the retailer and may have restrictions. Consider whether you want that arrangement before agreeing. Where a cash refund is legally due, ask about that right rather than accepting an alternative because it is the only prominent button.

If you paid partly with a gift card, check how each payment portion will be returned. Retain the original card or account details until the case is complete, and keep the refund confirmation showing the split.

Choose an exchange when another available item genuinely meets the need and the process is clear. Choose a refund when you no longer want the purchase or cannot identify a suitable replacement, subject to the applicable entitlement. The purpose is to resolve the problem, not to keep shopping merely because a return has started.