A good blog here from @Matt D on the RAJARs.
http://www.mattdeegan.com/2017/10/26/rajar-q32017/
Grimmy's slumped to the smallest audience for Radio 1 breakfast, but there's good news for Clara, Greg, Annie Mac, and Scott who have seen growing audiences. This somewhat contradicts that Radio 1's audience are shunning radio - although I guess they have more appeal with older audiences.
Moyles and Radio X are also on the up which is pleasing to see.