Plinth watch: the pick of the participants

A man known only as Simon raised a few titters – and some consternation – among the 1am crowd when he appeared on the fourth plinth entirely naked. It led to the art project's first instance of censorship – and to the best quote so far in subsequent media coverage: 'Simon, you're going to have to put something on or they want you down... sorry mate. Some pants or something' Photograph: acediscovery

A photograph taken from on top of the plinth using a pinhole camera Photograph: Anna CM

State of the art ... A plinther dressed up as a CCTV camera, silently surverying the watchers in Trafalgar Square Photograph: nicnac1000

Steve Cousins, aka the Balloonatic, who performed one of the most entertaining acts on the plinth to date. The self-proclaimed 'mischief maker and smile harbinger' once took his inflatable genius on Britain's Got Talent, according to Nine MSN News – but was considered 'ridiculous' by judge Piers Morgan Photograph: frank long

The crowd following the lead of plinther Andrew West, who is conducting a dance lesson, teaching the steps to Michael Jackson's Thriller Photograph: Aphexlee

Bubbles have been a continuing theme since the beginning of One and Other, with plinthers of all persuasions – fairy, gorilla and in this case, human – raining blobs upon the square Photograph: Pryere

A cat among the pigeons of Trafalgar Square ... No one told him to put his pants back on Photograph: alastairhumphreys.com

A participant whiles away his hour on the plinth – but it's London's summer weather that steals the show Photograph: lizsmith

A game of guess the plinth. Who could this fellow be ... the 'plinth of Denmark' perhaps? Photograph: where the art is

Plinther Steve Platt, on a rare sunny day, holding up his sign: 'I was going to spend my hour on the plinth as the sniper who shot Nelson but they don't sell muskets at Lidl's' Photograph: wottalottapixels