UK Prime Minister David Cameron has called on the EU to act to protect the rights of all people in the UK and to tackle the growing threat of terrorism, as he pledged to launch a national review into the EU.
He told an EU summit that a review was urgently needed.
Mr Cameron said the UK had “no interest” in leaving the 28-nation bloc and that there were “no reasons for a return to a position where we would be forced to make decisions about our own membership of the EU”.
Mr Cameron also called for the UK to remain part of the European Free Trade Association.
The UK’s position on the 28 members of the bloc, which has been in place since 1992, has been challenged by a growing number of countries.
In the wake of the Paris attacks in November, the US, Australia and New Zealand withdrew from the bloc.
Mr Trump has said the US would like to have a deal with other members of Nato and has said he would be willing to give Britain a “great deal” in return for Britain remaining in the bloc in a reformed way.
However, Mr Cameron told the EU summit he was “not going to accept that it is now time to change course and give up on the free movement of people”.
“If you want to take back control of your borders, if you want the EU in order to be more effective, if that’s what you’re after, then I’m very clear that we will act,” he said.
“We have no interest in going back to a situation where you have to take a position on people who are a threat to you, and I’m not going to give up my position as Prime Minister to do that.”
The EU has already called on Britain to reconsider its stance and is expected to issue a new report later on Wednesday.
Mr Ciaran O’Sullivan, the EU’s ambassador to the UK, said there was “no justification” for the Brexit vote.
Mr Cameron’s comments come as he seeks to secure the backing of all 27 EU nations to keep Britain in the European Union.
He will meet the EU leaders at the summit on Thursday, when the EU and the UK will hold their final summit before the end of the year.
Last year, Mr Caulfield was the first EU official to warn that Britain could leave the bloc without a deal.
At the time, Mr Farage, the Ukip leader, said: “If there’s no deal, if we’re not in the EU then there is a huge risk that the country could go down the drain.”
However the UK has seen a steady stream of people arriving in the past few months, with migrants from the EU making up almost half of all arrivals since June.