Both were prominent in the early stages when the Seagulls' smart play indicated a hard afternoon for the home club.
Ward, signed a couple of days ago from Wolves on a season's loan, was involved in setting up several promising attacks which put Birmingham's reconstructed defence under pressure.
But Agustien was the player who created the breakthrough in the 73rd minute. He put a pass into the path of Crofts who scored with a low measured cross shot to the right of Randolph.
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A big surge has been revealed in the number of asylum-seeking children who've been brought across the Channel and taken into care in Kent.
Thursday morning's weather for the east of the region
Thursday mornings weather for the west of the region