Hick, whose innings lasted just over six hours, and his captain, Tom Moody, who was 120 not out, put on 328 for the third wicket, beating a county record which had stood for 35 years.
Ashley Cowan, whose potential as a strike bowler has won him a place on the tour to the West Indies, confirmed himself as more than a useful batsman at Chelmsford.
Coming in at No 10, he rescued Essex with a career-best 77 to guide them to 271 all out against Middlesex, who were 30 for 1 in reply at close.
Meanwhile, Mike Gatting is willing to take over as coach of Middlesex in a year's time. Gatting has made his pledge in the wake of Don Bennett's decision to retire following 47 years on the Lord's staff as player and coach.Reuse content