Do TV actors mumble too much?

The new mini-series SS-GB has received so many complaints about the actors mumbling their lines that the BBC has promised to examine the sound levels before the next episode.

Writer and creator of the ITV period drama Victoria, Daisy Goodwin, and editor of technology website GadgetDetective.com, Fevzi Turkalp, discuss on the Today programme what, if anything, should be done to remedy unclear dialogue.