The Labour leader tells a private meeting of his parliamentary party that he won't allow it to fall into "the bad habits of the past".
Miliband is still keen to promise a reduction from £9,000 to £6,000 despite shadow cabinet concerns over cost.
There is despair among MPs at the party's lethargy and lack of ambition.
Having previously praised the Labour leader, the Lib Dem president says he has failed to change his party.
Analysing the body politic.
Who is he and what does he stand for?
When Tony Blair addressed the 1996 Labour conference he knew he was on the verge of a big victory. By contrast, Ed Miliband arrives in Manchester with the nation facing a constitutional crisis and hatred of Westminster running high.
Rather than an infantry advancing on Downing Street, Labour resembled a wounded army in need of convalescence.
Labour leader forgot key passage during 65-minute, no-notes performance.
The Labour leader's speech was politically astute and intellectually coherent, but it rarely inspired.