Officers from the Met Police have said that warrants of further detention have been granted for five men arrested following a counter terrorism operation in which a vehicle was stopped going outbound at Dover port on Sunday.
Four addresses in east London and one in south London are being searched as part of the investigation. Some of the searches are still ongoing.
A further two addresses in North Wales are being searched, and these searches are ongoing, police said.
Community support officers and fingerprint experts and members of Unison have backed industrial action in protest at a 1% pay offer. Unions are seeking a 3% increase after wage freezes or below inflation deals for the past three years.
These results send a clear message that after two years of pay freeze and last year's below inflation pay rise, police staff have had enough and that they are now ready to take industrial action over pay.
We are calling on the police employers to return to the negotiating table to improve the current pay offer.
Police civilian staff in England and Wales have voted to go on strike in a row over pay, said Unison.
The union's police sector committee will now meet to consider the ballot results and discuss the next move. Unison members voted by around 60% in favour of strikes and 4-1 for other forms of industrial action.
Alleged extremists believed to be aiming to join Islamic State fighters in Syria were arrested trying to smuggle themselves out of the UK.Read the full story ›
Officers from MPS Counter Terrorism Command (SO15), Kent police and the MPS Specialist Firearms Command (SCO19) stopped an outbound vehicle at Dover port at around 11.30pm on Sunday.
Police said a further 12 men and one woman who were stopped in the same vehicle were arrested on suspicion of immigration offences by Immigration Enforcement officers.
At around 3.45am today two men aged 24 and 40 were arrested in east London, while at 8.30am a man, 28, was arrested, all on suspicion of being concerned in the Commission, Preparation or Instigation of acts of Terrorism contrary to section 41 of the Terrorism Act 2000.
Five men have been arrested on suspicion of commission, preparation or instigation of acts of terrorism in Dover and east London, Scotland Yard said.
Three more men have been arrested today. The operation was "not in response to any immediate threat," police said.
Police are to get powers to force internet firms to hand over details that could help identify suspected terrorists and paedophiles.
The Anti-Terrorism and Security Bill will oblige internet service providers (ISPs) to retain information linking Internet Protocol (IP) addresses to individual users.
Home Secretary Theresa May said the measure would boost national security.
She said: "The Bill provides the opportunity to resolve the very real problems that exist around IP resolution and is a step in the right direction towards bridging the overall communications data capability gap.
"It is a matter of national security and we must keep on making the case for the Communications Data Bill until we get the changes we need."
However, the Lib Dems insisted that legislation - branded the "Snooper's Charter" - was "dead and buried".
Vodafone have said they will continue to monitor 111 and 101 phoneline services after a technical issue caused the non-emergency helplines to stop working this morning.
A spokesman for the phone company said: "We will continue to monitor the services closely and will be carrying out a full investigation into the issue. We apologise for any inconvenience caused.”
NHS England have confirmed that its 111 helpline is working normally again.
A statement from NHS England said: "The NHS 111 is now working normally. A previous technical issue has been resolved. The public should use the service as normal."
The technical problem that brought down the 101 non-emergency police number has now been resolved, Staffordshire Police have tweeted.
UPDATE: national 101 problem resolved, please use the 101 non emergency number if you need to contact police, thank you PLS RT