When mannequins in Primark window displays were spotted with Greggs favourites such as vegan sausage rolls and steak bakes last weekend, shoppers immediately turned to social media to discuss.

It eventually became clear that the presence of the bakery chain’s snacks was no accident – Primark and Greggs had joined forces to create a clothing range and an in-store cafe in Birmingham.

While the Primark and Greggs collaboration may have dominated headlines, it is far from the first surprising collaboration between retail brands. Here are a few of the most intriguing partnerships that have emerged in recent years.