Complex sentence: This was the first time Anglia had screened "Emmerdale Farm" in the 19:00 slot, Central were simply returning to the slots they used until December 1987, for a period Anglia and Central saw episodes one week later than other regions.
Split into simpler sentences: This was the first time Anglia had screened "Emmerdale Farm" in the 19:00 slot. For a period Anglia and Central saw episodes one week later than other regions.