Using contactless
When shopping in-store, most contactless purchases can be made up to a £100 limit.
For your security, occasionally you may be asked to insert your card and enter your PIN when you make a contactless payment, even if your purchase is under the £100 contactless limit.
When you get asked to enter your PIN when you go to make a contactless payment, this is for extra protection, just to make sure it’s always you that’s using your card.
When this happens, your transaction might be declined or the card reader might ask you to insert your card (it depends on the retailer). If this occurs simply insert your card into the reader and enter your PIN to continue to use contactless in future.