An English Football League assistant referee who “preyed upon young women” has been jailed for a string of child sex offences involving teenage girls.Gareth Viccars, 47, of Shackleton Place, Oldbrook, Milton Keynes, previously pleaded guilty to 16 counts, including sexual communications with a child, meeting with a child following sexual grooming, causing or inciting a child to engage in sexual activity and engaging in sexual activity with a child.