Full series consolidated data for the fourth series of Unforgotten reveals that the average audience has increased by an impressive 3 million viewers on the overnight audience, making it ITV’s most catch-up requested series since The Pembrokeshire Murders.

The average audience per episode rose to 8 million viewers across transmissions, when catch-up playback and ITV Hub viewing were included, across seven days.

The first five episodes of the series have achieved over 9 million viewers across 28 day viewing, with the opening episode adding 2 million viewers 8-28 days after broadcast, ITV’s highest ever 8-28 day gain for a programme.

ITV’s Director of Content Rosemary Newell said:

“Unforgotten’s quiet brilliance has not gone unnoticed by viewers. Clearly its reputation and reception grew the audience each week and brought the drama to new viewers, as the unprecedented 8-28 day gain shows. The fourth series is the most watched yet, up by around 2 million viewers on the third series, which is a rare thing and testament to the strength of this drama.”

Unforgotten has been recommissioned for a fifth series. It is produced by Mainstreet Pictures, Part of ITV Studios.

Series 1-3 of Unforgotten are available on BritBox, where they rank amongst the top 10 most watched titles. Series 3 and Series 4 of Unforgotten are also available on ITV Hub.