Hidden Treasures of the National Trust Main cast, played by Jim Carter Episode 1x01: Episode 1 (May 12, 2023) Episode 1x02: Episode 2 (May 19, 2023) Episode 1x03: Episode 3 (May 26, 2023) Episode 1x04: Episode 4 (Jun 2, 2023) Episode 1x05: Episode 5 (Jun 9, 2023)