The discovery of 35 bodies and an unknown quantity of unidentified human ashes at a Hull funeral home has become one of the most harrowing investigations in the history of Humberside Police. Linsey Smith investigates what went wrong and hears from some of the many families who've been left devastated by the discovery - some of whom now know the ashes they were given didn't belong to their loved ones.

File on 4 also hears how the funeral industry is largely unregulated and how concerns raised more than three years ago by the Competition and Markets Authority about the storage and treatment of the deceased haven't been acted upon.

Reporter: Linsey Smith
Producers: Holly Clemens and Nicola Dowling
Technical Producer: Craig Boardman
Digital producer: Melanie Stewart-Smith
Production Coordinators: Tim Fernley & Jordan King
Editor: Carl Johnston

Image Credit:Christopher Furlong\Getty