Greggs and Pret index reveals England’s true north-south divide, say scientists

AI-based analysis suggests the north starts at Watford Gap, where avocado wraps give way to sausage rolls, and includes Birmingham

The precise location of the north-south of England divide is a fraught question that has been debated for centuries, drawing on factors ranging from economic prosperity and political views to the pronunciation of the word scone". Now, scientists have entered the fray, proposing an objective, machine learning-based analysis of the distribution of Pret a Manger and Greggs shops across England.

The AI-based approach places the critical dividing line at which avocado wraps give way to sausage rolls close to the M1 Watford Gap services and concludes that Birmingham, Coventry and Leicester, which often fall into a disputed grey area, should be considered northern".