Like Callaghan, Brown served for only three years, also during an economic crisis. And despite being credited for his action to prop up the banks, the record government debt he created is seen as his biggest failure. Brown was scored negative ratings for the economy, society, democracy and foreign policy.
However the two lowest achieving PMs, according to the study, were Alec Douglas-Home (1963-164) and Anthony Eden (1955-1957).
Theakston said of the results: "Each of the top five PMs served at least six years in Downing Street.
"In the bottom half of the table, only Major had two terms in office, serving for seven years."
Tools designed to ensure computer code in smart cars does not crash has been inspired by hungry penguins.
The rounded sleeping capsules send guests drifting into ocean before arriving on desert island by morning.
Sitting on the saddle activates the part of the brain responsible for learning, a study has claimed.
Scientists are appealing for more people to donate their brains for research after they die.
Life on Earth may have arrived from Mars on an asteroid, scientists have claimed.
Lunar mission scheduled at the end of 2017 could find out if beer can be brewed on the moon.
A bottle used to teach children how far litter can travel ended up on Scottish beach after 8,700-mile journey.
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