The UK will come to regret its decision to leave the European Union, the president of the European Commission, Jean-Claude Juncker, has said.
One shouted at him: 'It's a British issue'.
Mr Juncker was cheered by Eurosceptic MEPs as he noted the UK's departure was due on March 29th, 2019.
The European Union's chief Brexit negotiator warned Britain Tuesday against undercutting EU rules and regulations that underpin anything from social protections to food security when it leaves the bloc.
"If you decide to jettison, leave behind, the common agreements and rules, then you have to accept that things can not remain as they are", Juncker added.
May, but mainly repeating the red lines that we've already known for two years", said Guy Verhofstadt, representative of the European Parliament for Brexit, "the problem is today we don't have a proposal from the United Kingdom side on the future relationship.
Gorton MP receives suspicious package a time Westminster office
It emerged today that two more suspicious packages have been sent to the Houses of Parliament, with another man taken to hospital. Huq said she had been assured that the substance was not harmful, but told the BBC that the parcels were now "part of a pattern".
But he warned that the border between Northern Ireland and the Republic could be a major roadblock to sealing a deal.
The U.K. and European Union "shall refrain from any measures which could jeopardize the attainment of the objectives of this agreement", the draft treaty says.
"Does Britain also want to leave that model and go toward regulatory competition - call it dumping - against us", he asked legislators at the European Parliament in Strasbourg France.
Goldman Sachs and UBS said last week they were starting to transfer some bankers to Frankfurt in preparation for Britain's exit from the EU.
"There was this Mansion House speech by Ms May, but it was mainly repeating the red lines that we know already", he said, adding that it was time to move beyond "slogans" and "sound bites".
"Then will come the time when you regret your decision".
Barnier also urged British Prime Minister Theresa May to speed up the Brexit negotiations and define her vision for the future relationship between the country and the 27 remaining member states.
The European Parliament's Brexit coordinator Guy Verhofstadt said talks he held with May and her Brexit minister David Davis last week had left him confident London would "see the advantages of such an approach".