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David Cameron has pledged to bring back powers to relocate terror suspects to other parts of the country, amid fears British extremists fighting abroad could return to carry out domestic attacks.
Setting out the UK's response to the threat posed by the Islamic State in a Commons Statement, the Prime Minister vowed to prevent terror suspects from "travelling in the first place".
He said primary legislation would be brought in "immediately" to give police "specific and targeted" stop and search powers at the country's borders, including the power to seize passports, and vowed action to stop suspects boarding flights.
Airlines would "have to comply" with terror no-fly lists, he said, warning "flights will not be able to land in Britain" if they fail to do so.
And the Prime Minister pledged to put terror suspects under "stronger locational constraints" under existing Terrorism Prevention and Investigation Measures (TPIMs).
TPIMs replaced controversial control orders in 2011, amid legal challenge and concern the human rights of suspects were being breached. Under the existing system, TPIM suspects cannot be "relocated" to another party of the country.
Mr Cameron also called for a "targeted discretionary power to exclude British nationals from the UK" and said he would "discuss details" of those plans on a "cross-party basis".
But Downing Street said after Mr Cameron's statement that discussion with security services would come before any cross-party talks. The Prime Minister held talks with Nick Clegg earlier to finalise the detail of today's announcement.
Amid reports of a Coalition split over the plans, the Liberal Democrat leader later told reporters he and the Prime Minister wanted to "get the right balance" between liberty and security.
"What we’ve done is targeted, proportionate and effective," he said.
Labour leader Ed Miliband welcomed the relocation move, but called for greater detail on what he called the "unclear" plans to exclude suspects from the country.
The statement came after one Tory MP raised doubts about the need for new passport confiscation powers.
"Legalities aside, you’ve got to ask how it works in practise in terms of passport confiscation and what value it will really add," Dominic Raab told the World at One.
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