Thanks to Mrs Gardiner from the forum, who heard Joseph's interview and clips from Hamlet on the Broadcasting House programme on Radio 4 this morning. I only caught the last few minutes on my way back from work, but it should be available to listen again on the website later. Hope we havent missed any other interviews...
 
Edit: the clip is available to listen to for another week. Joseph's very brief interview...*he said that he has been too tired to be nervous* and snippets of the dress rehearsal can be heard at about 25 -26 minutes into the programme.