A 15-year-old boy has been shot dead in during a “family fun day” at a park in west London.Police were called at around 7.20pm on Sunday to reports of a shooting in Emslie Horniman's Pleasance - known locally as “Teletubbies Park” near Hazlewood Crescent in Ladbroke GroveThe Metropolitan Police, London Ambulance Service and London’s Air Ambulance attended and a teenager believed to be 15, was found suffering injuries.