Ant and Dec?

Naturally as Ellen is already a bassist I picture Hep getting the drum kit so they can play together...

that guy from Rev is a ringer for Mr Hepworth

Victoria Cohen and Simon Amstell?

and Fraser Lewry, It's obvious, innit?!

its a shame Margaret Rutherford isn't alive for Mr H.

.

and Danny De Vito.

Could be played by Rupert Grint.

They can just dig up that bloke who was in Backbeat.

the Hepworth/Ellen audio commentary would be exactly like a podcast.