Elsewhere, Tim Farron's party promised to ban the sale of diesel cars and small vans in the United Kingdom by 2025.
Julia went on to say that the party hasn't previously called for referendums on other treaties in the past, so this shouldn't be any different.
While majoring on plans to fight hard Brexit, the Lib Dem manifesto also set out a package of more than £13 billion of tax rises to fund public services, including a penny on every income tax band and a rise to 20% for corporation tax.
So, how do the Lib Dems plan to change that?
The Liberal Democrats want you to have your choice over your future.
Across the United Kingdom, the manifesto says the Lib Dems would end the 1 per cent cap on pay rises in the public sector, and reinstate housing benefit for people under the age of 21.
The latest opinion poll from Panelbase, of more than 1,000 people between 12 and 15 May, put the Liberal Democrats on 7%, below the party's 7.9% share of the vote at the 2015 general election manifesto.
The Liberal Democrats have pledged to review the case for a single rate of pensions tax relief and committed to maintaining the triple lock in their election manifesto.
Overtime, celebration rules among changes made at NFL owners' meetings
Two other former players, Derrick Brooks and James Thrash will hear appeals for players. Instead, it chose to move the game to Tampa, runner-up to Los Angeles in the bidding.
Led by Tim Farron (pictured), the party has also promised £100bn of additional infrastructure investment and the legalisation of cannabis, which it claimed would raise £1bn in tax.
'Not Theresa May's cold, mean-spirited Britain'. In order to do that, they have shifted to the right.
"I would love us to be in a situation where we can bring in a law and create that target, but I want to make sure the money and the nurses are there in the first place, so we don't miss it" he added.
The prime minister's Conservative Party has surged in the polls in recent months, now leading with 49 percent of the vote according to a YouGov poll published on May 12. However, Mr Georgeson is understood not to have contributed specifically to the election manifesto in 2017.
It comes just a month after Mr Farron was forced to clarify hat he does not think gay sex is a sin after he repeatedly failed to say so in a string of interviews.
"From increasing taxes to borrowing more - from putting our security at risk to scrapping Trident - these policies are an echo of Corbyn's manifesto we saw earlier this week".
The party also supports reversing a number of benefit cuts introduced by the present government - and by the Coalition the Lib Dems were once part of - such as the "bedroom tax", which cuts housing benefit for some tenants.