Complex sentence: Episode 3 was due to be broadcast on Sunday 13 May, however ITV gave the following reason for it not being shown as scheduled: We regret the late change to the schedule and the non-appearance of Sunday's episode of Vera.
Split into simpler sentences: Episode 3 was due to be broadcast on Sunday 13 May. However, ITV gave the following reason for it not being shown as scheduled: We regret the late change to the schedule and the non-appearance of Sunday's episode of Vera.