Complex sentence: The first writer was Adele Rose-in Series 1 she wrote eps 1,2,3,4 and 6, her daughter, Carrie Rose, writing ep 5-and the most prolific was Brian B. Thompson, who wrote 50 episodes over 12 series.
Split into simpler sentences: The first writer was Adele Rose-in Series 1 she wrote episodes 1--4 and 6; her daughter, Carrie Rose, wrote episode 5. The most prolific was Brian B. Thompson, who wrote 50 episodes over 12 series.