Former Scotland Yard Detective Peter Bleksley has warned of the “gloomy” signs surrounding the search for missing teenager Jay Slater as it enters its eighth day. The 19-year-old from Oswaldtwistle, Lancashire, disappeared in Tenerife last Monday after telling a friend he planned to walk to his accommodation after missing a bus, a journey expected to take around 11 hours on foot. Search teams have scoured the island around the location where his phone last located him, using drones, helicopters and volunteers on foot. Speaking to GB News, Bleksley admitted he fears the search for Slater “may n…