London third best for trick-or-treaters

After Birmingham and Leeds. How do I know that? Because – challenged by James Dearsley to waste their time crunching the numbers – Houseprice.AI, the developers behind the Horizon property valuation machine, say so. The algorithm involves numbers of children under 10, property density and disposable income. In other words: Is the area kid-friendly? Is trick-or-treating easily walkable? Can the residents afford sweets? Here are the results.