Last time we booked him, bestselling author and beloved Guardian daily sketch writer John appeared at LitFest on the day Theresa May packed her bags at no.10. Now we’ve booked him again, the entire government seems to be finally about to go. John talks to fellow Guardian journalist Michelle Kambasha about the challenge of skewering the news every day, about how he creates such pen-perfect caricatures, whether he’ll miss the Maybot, the Convict, Radon Liz and Rish!, and who he has his sights on to replace them.