The Vacuum Cleaner is an artist/activist collective of one. Some people take half an hour out to do yoga everyday – he modifies police logos. Usually a solitary creature, he’s invited Leah Borromeo along to observe him in his natural urban habitat in the hunt for a juvenile laugh.

Artists and activists launch a poignant paper aeroplane ‘assault’ on London’s Syrian Embassy in solidariry with Syrians killed in protests against Bashar al-Assad’s regime. Maybe next time, they’ll throw a bunch of Louboutin’s and Louis Vuitton handbags at the window instead.

The Haircut Before The Party are artist hairdressers that traipse around demos with a hairdresser’s chair in a bike trailer. Always running with scissors, they’re fighting government cuts with, erm, cuts.

The gilded halls of London play host to some multinational back-room dealing (with mini croissants and freshly squeezed orange juice). A gang of climate activists decided to upset this corporate cosiness by making love, not oil.

Santacon: the first of ten Random Acts made by Leah Borromeo for Channel 4’s news short-form arts strand.

Dr D – London’s Prince of Paste, Sorcerer of Subvertisising, Viscount of Vandalism – rang up one afternoon. “What you doin after dinner tonight? Wanna come out with me and…?” Well, yeah. Duh. Mama didn’t raise no fool…

The Space Hijackers are a Situationist-inspired anarchitect collective. Troublemakers with a dapper cut and a razor-edged wit, they saw fit to tackle moves by the UK’s coalition government to privatise bits of the NHS. Their mode of battle? “For Sale” signs as popularised by estate agents.

What do you get when you cross an Elvis impersonator with an evangelical preacher and throw in a protest against corporate sponsorship of the arts? Reverend Billy, his choir and an almighty oil-covered flashmob of the Tate Modern’s Turbine Hall… in multi-part harmony.