By Sophie Watson & Charlie Duffield A four-year-old is forced to avoid sunlight and wear long-sleeved top after being badly injured by the UK’s most dangerous plant. Autumn and Steven Mckown went on holiday from their home in Hungerford, Berkshire, to Dublin, Ireland on Friday April 19 along with their four-year-old son Bentley for a softball game. Bentley was playing in the bushes with other children while waiting for his parents. However, after coming out of the bushes, Autumn says Bentley was scratching his left arm, it it became raised and red. Initially, the 27-year-old thought her son ha…