Eddie Jones has admitted that England have an "ongoing leadership issue" following their Six Nations defeat by Scotland at Murrayfield last weekend.
England suffered just their second loss in 25 Test matches, going down 25-13 to an inspired Scottish outfit.
The 2003 World Cup winners struggled to deal with their opponents' tactics during the first half, especially at the breakdown where the hosts were overwhelmingly dominant.
"We've always known that we have to improve in our leadership," Jones told BBC Sport. "That's an ongoing issue for us, and something that takes time and is not solved overnight.
"It takes development, intellectual input, consultation, discussion, and we are doing all those things and moving in the right direction.
"I always give the example of the All Blacks (New Zealand). It took them eight years to come up with a stable and robust leadership model to win the World Cup. We are aiming to do that, and we've had two years together."
England return to Six Nations action on March 10 when they take on France in Paris.
Germany
Switzerland
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Scotland
