I couldn't find it.
In fact, Amazon UK does provide a shopping cart feature, known as "Your Shopping Basket." Similar to the common "shopping cart" concept in other regions, it allows users to temporarily add items of interest to a virtual basket while browsing and comparing different products, making it convenient to view and modify the shopping list at any time.
However, it's worth noting that the shopping cart on Amazon UK may have a different name compared to some other Amazon sites in different regions. In some countries, such as the United States, this feature is called the "Shopping Cart," while in the UK, the term "Your Shopping Basket" is more commonly used. This difference in terminology might lead to confusion for some users, mistakenly thinking that Amazon UK does not have a shopping cart feature.