Gentrification can be determined with a Top Trumps-style checklist. A cold-pressed juice bar and street food scene are staples, alongside a farmer’s market for the weekend, yoga studios and some sort of dance party — ideally in a repurposed industrial space near an area which has been given new life under a fresh name. Forest Gate is the Hackney Fringe, South Tottenham becomes Upper Stokey and everyone knows Walthamstow is Awesomestow. In south London, Croydon is on its way t