Spot the odd one out.
You must justify your answer.
A for Gardner, C for Highlanders, A for Peron, ?, I for the engine, R for Daley. So the odd one out is probably the fourth (though I can't identify it). Update: Mohirl (thanks!) tells me the fourth is Gareth Hunt. He's used for Cockney rhyming slang rather than Cockney alphabet so is, in fact, the odd one out.
Probably not the expected answer, but it's still technically correct.
The odd one out is the
top middle one
because
it's the only one with two people rather than one.