A late goal in the 84th minute from Ryan Leonard secured three points for Southend yesterday in League One.
The Blues won 1-0 at home to Bury taking them up to 13th in the table.
In League Two Colchester are 15th after a nil nil draw with Coventry.
In the National League South Chelmsford beat Dartford 1-0, East Thurrock drew 2-2 with Eastbourne Borough, Braintree drew 1-1 with Bath and Concord Rangers drew 2-2 with Weston Super Mare.
And in the Isthmian Premier Billericay beat Enfield 2-1.