She also confirmed she wants to reduce net migration to tens of thousands
The British Prime Minister Theresa May has attacked Jeremy Corbyn at her first prime minister's questions session in a response that has drawn comparisons to Margaret Thatcher.
In a jibe over the UK Labour leader's comments to David Cameron about unscrupulous employers, Mrs May said Labour MPs would be familiar with a "boss who exploits the rules".
In a punchy exchange, during what has been widely viewed as an accomplished performance, she said: "I suspect that there are many members on the opposition benches who might be familiar with an unscrupulous boss."
"A boss who doesn't listen to his workers, a boss who requires some of his workers to double their workload and maybe a boss who exploits the rules to further his own career. Remind him of anybody?"
She also used the occasion to confirm the British government still wanted to reduce net migration to the tens of thousands.
It came after confusion over whether her administration had scrapped the target, which was pledged, and repeatedly missed, by David Cameron.
On Tuesday UK Foreign Secretary Boris Johnson and Home Secretary Amber Rudd both suggested the tens of thousands benchmark had been dropped.
But Mrs May told MPs: "I am very clear that the vote that was taken in his country on June 23rd sent a very clear message about immigration that people want control of free movement from the EU and that's precisely what we will be doing and ensuring that we get in the negotiations that we will be undertaking."
"I also remain absolutely firm in my belief that we need to bring net migration down to sustainable levels. The Government believes that that is the tens of thousands."
"It will take some time to get there but of course now we have the additional aspect of those controls we can bring to those people moving from the European Union."
Net migration there is currently running at 333,000 - the second highest on record.
She also confirmed that while the George Osborne target of running a budget surplus by 2020 had been abandoned, it was still the government's aim to run a Budget surplus in the future.
Her appearance came ahead of a trip to Germany where she will hold "frank" talks with her counterpart Angela Merkel.
Speaking ahead of the trip she said she was "determined that Britain will make a success of leaving the European Union" and her visits to Germany and France on Friday was to "forge strong working relationships".
She said she did not "underestimate the challenge of negotiating our exit from the European Union".
Mrs May has already spoken to the president of the European Council, Donald Tusk, to tell him the UK will relinquish its presidency of the body in 2017.
She told him it would not be right for the country to take its turn on the council at a time when it would be "prioritising the negotiations to leave the EU".