Why are my Android downloads taking up too much space?
We are aware of an issue with downloads on Android phones taking up too much space. We hope to have this issue fixed in a future update.
In the meantime one way to get around this is to clear the apps cache (you can do this by going to settings->Apps->BBC iPlayer Radio->Data usage->Storage->Clear Data)
Alternatively you could manually remove the download when you've finished listening to a programme (before it expires).