BBC Radio 4 drama series The Interrogation returns for series 5 this month. According to the Radio Times, Joseph appears as Neil in episode 3 of the same name, on Friday 31st March 2017 at 2.15pm. 

The INTERROGATION S5-E3 Neil

Fri 31 Mar 2:15pm - 3pm
BBC Radio 4 FM, BBC Radio 4 LW

SUMMARY
By Roy Williams. Detective Inspector Max Matthews has a hunch about someone who comes in to make a victim statement. Kenneth Cranham, Alex Lanipekun and Joseph Millson star. Last in the series.

CAST & CREW
DI Max Matthews - Kenneth Cranham
DS Sean Armitage - Alex Lanipekun
Neil - Joseph Millson
Sally - Catriona McFarlane
Sarge - Karen Bartke