Ariana Grande]. For those of you in the UK, watch the video here via iPlayer and listen to the full interview here (available for 29 days).
Update: 1st December 2015. The video is added.
Update: 4th December 2015. The 'Best of Nick Grimshaw' via iTunes.
Update: 1st September 2016. Video: Nick Showing a revolting video to his guests.
This video is also shared by danieljradcliffe.tk on Facebook.
Photo via Twitter:
Some photos of him signing for fans outside the studio
picture source: FameFlynet