The Labour leader Ed Miliband is giving a speech at the Co-operative Bank in London.
He has called for "an economy based not on the short-term, fast buck, take-what-you-can culture we see too much of in our banks today. But on long-termism, patient investment, and responsibility shared by all."
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Marjorie and Michael Cawdery, both 83, are understood to have been stabbed to death in a killing their family called "incomprehensible".
Detectives have launched a murder investigation following the shooting in Brent, north west London on Friday night.
Hot and humid throughout the Bank Holiday Weekend.