A Covent Garden street entertainer dressed as a superhero and bound in a straitjacket, mounts an extended unicycle aided by two audience volunteers sporting un-convincing Batman and Robin capes. LinkLinkLink
1888 puts it in the William Ewart Gladstone era; but is it he? If not, who then? There are apocryphal stories of notable Conservatives confusing the NLC for a public convenience when on their way to the House. Perhaps this is one of 'them' leaving.