The figure includes 12 arrests made in connection with the Westminster attack, 23 after the Manchester bombing, 21 linked to the London Bridge attacks, and one after the Finsbury Park attack.
It was also revealed that 58 of those held were female - the highest number on record. The 54 per cent increase was caused in part by 64 people being held after attacks in Manchester and London.
THE NUMBER of terror arrests in Britain surged to a record high this year after a wave of deadly attacks hit the UK.
An increase was also noted in the 73 arrests for "domestic" terrorism, which refers to activity where there are no links to either worldwide terror or Northern Ireland.
This category refers to activity linked to or motivated by any terrorist group that is based outside the United Kingdom which operates in and from third countries, such as Islamic State.
There has been 400 arrests on terrorism-related crimes in the previous year. The remaining arrests were Northern Ireland-related (five) and unclassified (30).
The Home Office security minister, Ben Wallace, responded to the figures saying: "The police and security services have been clear that we are facing a shift rather than a short-term spike in the terrorist threat".
He added: "The statistics we are publishing today demonstrate the breadth of work that they undertake, alongside the rest of the criminal justice system, day in and day out to keep us safe". The whole of society must come together to challenge the terrorist threat.
The Government is reviewing its counter-terror strategy in light of recent attacks, amid warnings that the threat from Isis is continuing to rise as it loses territory in Syria and Iraq.
Mrs May told ministers that the threat from terror was at an "unprecedented" level, despite the military setbacks experienced in its Middle East strongholds by Islamic State - also known as Daesh.
Home Secretary Amber Rudd told the weekly meeting in 10 Downing Street that the pace of attack planning has increased "significantly" over the past year.
These probes involve around 3,000 "subjects of interest", while there is a further pool of more than 20,000 individuals who have previously been investigated.
The figures come on the same week that it was claimed the Manchester bombing in May could have been prevented "had the cards fell differently".