London has been rocked by a fourth terror attack in three months, when a man drove a van into a crowd of Muslim worshippers in Finsbury Park.
Prime Minister Theresa May has chaired a meeting of the Government's Cobra emergency committee in response to the attack, condemning the "terrible incident".
But despite this latest attack, relatively few people have been killed by terrorist attacks in the UK in recent years.
Previously, a senior Whitehall source revealed the security services have foiled five attacks in the two months since the Westminster attack.
Defending against accusations that MI5 had been repeatedly warned the Manchester suicide bomber, Salman Abedi, was dangerous, the source outlined the scale of the job facing counter-terrorism officials.
Partly because of this, the number of people killed by acts of terrorism has remained low compared to other countries - with 13 people dying because of terrorism in the UK since between 2010 and 2015.
Terror is killing far fewer people in the UK now than it was in the 1980s
Between 2000 and 2015, 90 people have been killed in the UK in terrorist attacks, according to figures from the Global Terrorism Database. Although not on British soil, a further 30 British people were killed in Tunisia when a gunman attacked a hotel popular among Western tourists.
This compares to 1,094 deaths in the 15-year period before that, between 1985 and 1999, and a further 2,211 between 1970 and 1984.
The worst year for terrorism-related deaths in the UK was 1988, when 372 people died. The majority of these died in the Lockerbie disaster, when 270 were killed as a Pan Am transatlantic flight was destroyed by a bomb.
Since 1970, Northern Ireland has seen the most terrorism-related deaths out of any nation in the UK, with IRA-related terrorism plaguing the nation for decades.
1972 saw the peak of this violence, with 353 people killed in Northern Ireland - out of a total of 368 in the whole of the UK.
How does the UK's terror threat compare with the rest of Europe?
Since 1970, the UK has faced the most deaths as a result of terrorism in Western Europe - totalling 3,395.
Spain is the next worst-hit, with 1,261 deaths since 1970. 2004 was the country's worst year for terrorism, when 192 people died as Madrid bombings.
1988 was the worst year for terror in Western Europe, when 440 people in total were killed in attacks - the majority being killed in the Lockerbie bombing.
In 2015, France saw its worst ever attack in Paris when nine terrorists killed 130 people at multiple locations across the capital.
Over the last 10 years there have been 1.4 deaths per year in the UK due to terrorism - which, according to research from BuzzFeed, means you're more likely to be killed by dogs (18 deaths per year), hot water (100 deaths per year) or using your phone while driving (2,920 deaths per year).
Despite public concern, the terror threat in Europe is relatively low
Terrorism is becoming an increasing concern for Europe's people, with the UK's own threat level set at "severe" - but the figures show that Europe is one of the safest areas in the world for terrorist-related incidents.
While there have been several large attacks in Western Europe in recent years, the number of people killed by terrorism in this region is relatively low compared to other parts of the world.
The Global Terrorism Index found that 38,422 people were killed in terrorist attacks across the world in 2015.
The majority of these were in the Middle East and North Africa, where 17,752 died in terror attacks. Sub-Saharan Africa was the next worst-hit, followed by South Asia.
Since 1970, the Index has counted 106,539 deaths in this region, out of a worldwide total of 348,759 - compared to 6,400 deaths in Western Europe.