Clacton test routes - Tesco roundabout:
At Tesco driving in - use the left lane for 2nd exit straight ahead to Clacton, even though the sign shows the 2nd exit offset to the right (photo below).
At the Tesco roundabout driving out, 1st exit straight ahead for London. Just keep left and indicate to exit (photo below). At the roundabout after this one Harwich is the 3rd exit right.