George Galloway, London Mayoral Candidate for The Respect Party, insists it needs "a big figure" to lead the city.
The former MP for Bradford West, who has had a wide and varied career in politics, believes the mayor needs to be a powerful presence.
"London needs a leader, not a reader," he told Julia Hartley-Brewer. "It doesn't need a desiccated calculating machine."
"I think Lilliputian is a good description." he added. "As a big world city, it [London] needs a big figure, a bigger figure than the front two, to lead it."
He asserted his plans were "radical" enough to implement effective change, but also to benefit workers on lower incomes.
"I've got a raft of policies which would radically change the city," he insisted. "London is essentially a tale of two cities, the one per cent dripping with gold and the rest struggling to survive.
"The rest need a mayor on their side, and I would be on their side."