The chair of the Co-operative Group says the unanimous vote in favour of wide-ranging reforms as a "highly significant moment" for the mutual, which slumped to £2.5 billion annual losses after a period of crisis.
Ursula Lidbetter said: "I am delighted that our members have made clear their commitment to far-reaching reform of our governance with this unanimous vote.
"There is a huge task ahead of us if we are to deliver the reforms necessary to restore the Group's reputation and return it to health but the board will work hand-in-hand with our members to ensure that we seize this opportunity.
"It is vital that the right changes are put in place as soon as possible to build a more effective organisation for our members, customers and colleagues."
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