If this is still spring, it is one that is thickening into a rich summer texture very fast. Hard to distinguish between the two seasons, really, with the warm days we are having. This park sits in a part of fashionable, hip north London and it is in full election mode, rampant with pro-Corbyn posters, restless with the sort of impromptu psephological chat I first came across 20 years ago on the eve of Blair’s ascension to power.

Scantily-clad sun-seekers form a long and wide human blanket that alternates with nature’s green carpet. I cycle down the path towards the south exit. Along the way I am exposed to…