Layered with no less than three types of chocolate – a crunchy cocoa digestive biscuit, dark choc chips and McVitie’s signature milk chocolate topping – these Seriously Chocolatey Digestives were created by the biscuit brand as a way to tap demand for more indulgent everyday treats, following the £1.2m in incremental sales delivered by McVitie’s White Digestives in their first six months on shelf.