According to Attorney General Jeremy Wright QC MP, the 71 offenders, who have been successfully prosecuted, are connected to the conflicts in Syria and Iraq — and he expects that number to rise.
"Terrorism is a global threat that requires a coordinated international approach. The international community has united to defeat these organizations and we've already seen many successful prosecutions here in the UK," Attorney General Jeremy Wright QC MP said.
In a post-Brexit charm offensive, the Attorney is set to meet with UN officials in New York to promote his role in prosecuting Daesh terrorists and its followers and the importance of gathering global intelligence.
During the United Kingdom's campaign to remain in the European Union, former Prime Minister David Cameron claimed Abu Bakr al-Baghdadi, leader of the Islamic State, would be happy if Britain left the EU.
"I suspect al-Baghdadi would be happy," if the UK left the EU, David Cameron told an audience at the World Economic Forum in May 2016.
And while the current British administration carry out their negotiations with Europe over its severance with the EU, the government's top lawyer is in New York trying to secure intelligence relations and reassure delegates that the UK's legal services "are very much open for business post Brexit."
"We have the most open and trusted legal system in the world which contributed to US$31.8 billion to the UK economy last year, among other reasons because our judiciary has a reputation for excellence, incorruptibility, objectivity and independence."
"Justice will form a key part of the Brexit negotiation and I am keen to engage with the legal services industry to address any concerns," Jeremy Wright QC MP said.
Meanwhile, Brexit is receiving a dose of the UK's own justice system after a legal campaign proving that triggering Article 50 requires Parliamentary approval was fought and won at London's High Court.
The UK government which appealed to the Supreme Court over the ruling has to wait until January for a decision.