The UK's terror threat level has been raised from severe to critical, indicating a further attack may be imminent.
Theresa May said the decision follows an explosion on a Tube train in South west London, on 15th September 2017, which injured 29 people.
Islamic State says a "detachment" of the terror group was behind the attack at Parsons Green station at the height of Friday morning's rush hour....
Metropolitan Police Assistant Commissioner Mark Rowley has said police are "chasing down suspects" - but warned it is routine for IS to say they carried out attacks irrespective of whether they were involved or not, adding that the extra military support will free up 1,000 armed police officers.
This is the fourth time that the terror threat level has been placed at "critical" in the past 11 years.
Royal baby: Duchess of Cambridge expecting third child
The Duke and Duchess of Cambridge are expecting their third child, Kensington Palace has announced.
The Queen and both families are said to be "delighted with the news".
As with her previous two pregnancies, the duchess, 35, is suffering from hyperemesis gravidarum, or severe morning sickness.
Today 31st August 2017 marks the eve of the 20th anniversary of her death in a Paris car crash at the age of 36.
William and Harry view tributes to their mother at the gates of Kensington Palace on the eve of the anniversary of her death in tragic echo of scenes 20 years ago when they stood there as boys.
Photographs and floral tributes have been left outside the gates of Kensington Palace ahead of the anniversary of Diana's death
Armed police descended on Euston Station after it was evacuated due to a bomb scare - which turned out to be an e-cigarette explosion.
The busy north London station was placed on lockdown at around 7.45pm on Tuesday evening, 29th August 2017, with dozens of police officers seen rushing to the scene.
Huge crowds of people were led out of both the underground and mainline station following a "security alert"....
Police later said there had been a small explosion at the station, believed to have been caused by an e-cigarette in a bag. There were no reported injuries
Buckingham Palace attack: Man armed with knife injures two police officers outside London landmark
Buckingham Palace was placed on lockdown after a man attacked police officers with a knife on Friday evening 25th August 217.
Big net migration fall since Brexit vote, latest estimates show
Net migration has fallen to the lowest level for three years after a surge in the number of EU nationals leaving the UK since last June's Brexit vote.
Net migration - the difference between those entering and leaving the UK - fell 81,000 to 246,000 in the year to March 2017....
More than half that change is due to a decrease in net migration of EU citizens, which is down 51,000.
The government is committed to reducing net migration to below 100,000.
BARCELONA TERROR ATTACK: At least 13 people have been killed and dozens injured after a suspected terrorist crashed into a crowd of people on a pavement in a popular tourist area of Barcelona.
There are also reports of a live hostage incident at a Turkish restaurant near the scene.
At Least 44 Dead and Hundreds Injured After Trains Collide in Egypt
Two passenger trains collided on Friday just outside Egypt’s Mediterranean port city of Alexandria, killing at least 36 people and injuring about 123, according to the Health Ministry, in the country’s deadliest rail accident in more than a decade.
Authorities are investigating what caused the crash.
At least six people were injured and two trapped passengers rescued after a bus crashed into a shop on a busy high street in south London.
The bus driver and two passengers were taken to hospital.
Photographs showed the double-decker bus embedded in the side of a shop on Lavender Hill, near Clapham Junction station in Battersea....
The bus mounted the pavement and hit the Poggenpohl Kitchen Design Centre at about 7am on Thursday 10th August 2017 at the start of rush hour.
Passengers described how a section of the shop’s awning had pierced the front windows on the upper deck of the bus.
A witness said he saw a trapped woman screaming and “a lot of blood”.
Police cordoned off the scene and advised commuters to avoid the area.
Prime Minister outlines EU citizens plan: 3 million EU citizens allowed to stay in UK permanently - and will get same rights as Britons including bring family members into the UK
All EU citizens living lawfully in the U.K. ( For at least FIVE Years ) will be able to apply to 'Settled Status' from mid-2018
At least six people are dead and dozens of others are missing after a packed tourist boat carrying about 160 people sank Sunday afternoon in a reservoir near Medellin, Colombia, officials said.
Six injured as car crashes into group of Muslims leaving Eid prayers outside Westgate sports centre in Newcastle
ARMED police rushed to the scene of a crash after a car smashed into several people at the end of Eid prayers in Newcastle.
Emergency services were scrambled to the site of the collision outside a community centre on Westgate Road....
Six people – including children – were hit before medics rushed to the scene.
Two of the children are in a paedeiatric intensive care unit, with one of the adults in a high dependency unit.
Pakistan oil tanker inferno kills at least 140
At least 140 people were killed when a lorry transporting oil burst into flames near the Pakistani city of Ahmedpur East, local officials say.