Watch Series Roast Battle Online Free at Couchtuner. On Roast Battle UK, host Jimmy Carr will be joined by judges Russell Brand and Katherine Ryan for an unmissable war of words between the country’s finest comic performers. Two roasters enter an arena filled with bloodthirsty comedy fans with just one simple mission: to bring their opponent to their knees with five of the most ferocious jokes their minds can muster. These gags won’t be for the faint of heart. Expect a no-holds – barred assault where no topic is off-limits. This is not a harmless comedy showcase or a friendly panel show… this is competitive roasting.