The Liberal Democrats would spend £3.5bn more on mental health care in England over the next parliament.
The money would be spent on revolutionising children's and adult mental health care including:
The extra funding will help people like Kat get the treatment and support they need to tackle their mental health conditions.
The announcement comes as the party releases its 'Manifesto for the Mind'.
Liberal Democrat Leader Nick Clegg said:
"Liberal Democrats believe that no matter who you are, where you come from and what your circumstances, you should not be denied the opportunity to fulfil your potential.
"Yet, in Britain today, millions of people are denied the opportunity to get on and live happy, fulfilling lives because they live with mental health issues.
"One in four of us will experience mental health problems at some point in our lives. And yet, for decades, mental health services have been neglected by successive governments, the poor relation of physical health problems.
"That's why in Government, the Liberal Democrats have slowly started to undo that damage.
"In the coalition government's final Budget we secured more than a billion pounds to revolutionise services for children and young people, alongside the first ever waiting times standards and a plan to roll out talking therapies across England.
"But we cannot and must not rest there. Equality for people with mental health issues is a liberal mission.
"As this document sets out, in Government again, we will continue to put mental health front and centre of the political debate.
"That's why I am so immensely proud that we are the first party to put equality for people with mental health problems on the front page of our full General Election manifesto.
"Only the Liberal Democrats can keep Britain on track and provide both a stronger economy and a fairer society with strong public services.
"Only the Liberal Democrats can and will make sure mental health is treated with the same urgency as physical health, with money to back that up, and challenge the stigma every day."
Liberal Democrat Spokesperson for Health Norman Lamb said:
"This government has made great strides towards better mental health care. We have invested millions in talking therapies, eating disorders and children's mental health.
"Over two and a half million people have benefited from talking therapies thanks to the Liberal Democrats in government".
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