Jordan Cox scored a double hundred on his return to Kent as his new side Essex dominated day two of their Vitality County Championship clash at Canterbury. In-form Cox, who has made a sparkling start to life with his new county, scored 207 from 255 balls as Essex declared on a dominant 591-7. Kent were then reduced to 118-4 in reply, a familiar tale of woe for the hosts who still trail by 473 runs. With Essex resuming on 287-4 and Wes Agar unable to bowl after injuring his shoulder on Friday, the visitors eased their way through the first hour without any damage. Cox had averaged just 24.06 in…