Do you ever hug trees?” Alastair Campbell says to me, dressed in a blue anorak and sturdy walking boots, smiling yet serious.
Er, no… I can’t say that I do.
“You’ve never hugged a tree?! OK, c’mon... put your bag down.”
We’re in the middle of Hampstead Heath and the man who is widely recognised as the template for The Thick of It’s Malcolm Tucker – a character who I’m pretty certain would scream all kinds of expletives at anyone who asked him to hug a tree – is pointing to a large oak standing before us, gesturing for me to go over and wrap my arms around its massive trunk.
“Right around it. OK, now close your eyes…”
And so I find myself, eyes tight shut, hugging one of Hampstead Heath’s finest old oaks as Alastair Campbell, Director of Communications for Tony Blair from 2000 to 2003, watches on, ordering me to “Stay! You have to stay… you will start to feel it!”.