Our guest this week, Nathan Caton (http://www.nathancaton.com) studied architecture before his diversion into comedy. In his company, we are rifling through blurry blueprints, sketching wonky towers and clipping the wings from flying buttresses in search of the world’s worst architect. Among the burning rubble, we discover prostitute-shaped brothels, the infamous Bond villain Goldprick and a Dutch firm which specialise in tasteless post-disaster tribute buildings.

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