The Broadcast had earlier been trailed to members in an email from Elizabeth Jewkes, the party member who had proposed its inclusion in the manifesto. She said:

"Just a few years ago, in 2009, I attended our conference in Bournemouth as an ordinary party member & proposed that nobody should pay tax on the first £10,000 they earn.

"If you told me at the time that just a few years later the Lib Dems, in government, would have made this tax cut a reality for millions of working people, I wouldn't have believed you.

"Of course, we all know that it's now happening - a huge £700 tax cut for millions of people - but most of the public don't.

"It's our job to tell them, and we need your help. Tonight, our latest party political broadcast is launching, and it's all about the difference our tax cut is making to ordinary working people."

If you haven't seen the Broadcast, it's available on You Tube and below.