As Italy faced the embarrassment of having no clubs in the Champions League last 16, Atalanta became the saviours of national reputation - and pride.

Travel can drive overtourism, contribute to climate change and support problematic political systems. Yet the industry also creates livelihoods and fosters exchange.

Sky News has spent time with a squad of enforcement officers tasked with tracking down fly-tippers. It's a game of cat and mouse as they walk the streets of Brent, London, looking for clues.