Just listened to today's episode and agree with @bookworm14 the actor playing Will is painfully 'drama school'. The narrator I can tolerate although I can definitely see why he's pissed you off @Fireweeds.
Overall it doesn't yet feel like it works well for radio. Some of the changes of voices (like in Stephen Stanton's letter) sound forced, and would work better on stage (this version has been created by a theatre company).
Not sure why Will's siblings all appear to be in their thirties, either! Paul's only meant to be like 2 years older than Will, surely.
Looking forward to tomorrow's episode, it is extremely atmospheric.