Barnaby Eaton-Jones reported this information on Facebook:

THE IMPORTANCE OF BEING EDITED...

The sound design and final edit of the full-cast audio version of 'The Importance of Being Earnest', featuring Tim Brooke-Taylor as Lady Bracknell, has been delivered by the incomparable Joseph Fox. It is a beautiful listen! There a handful of lines, added by me, to turn this from a stage production into an audio; where I had a Wilde time impersonating Oscar and nobody spotted by bon mots (I always keep them well hidden). So, that was a relief!

Keep your ears clean for the upcoming release from Spiteful Puppet.