BRUSSELS The United States is Britain's deepest defence and security partner and the intelligence sharing relationship between the two countries is based on trust, Prime Minister Theresa May said on Thursday.
British ministers and security chiefs have been dismayed by leaks in the U.S. media about intelligence on a suicide bombing in Manchester, and May is due to raise the issue with U.S. President Donald Trump at a NATO summit in Brussels on Thursday.
"On the issue of the intelligence sharing with the United States of America, we have a special relationship with the USA. It is our deepest defence and security partnership," May told reporters as she arrived at the summit.
"Of course that partnership is built on trust and part of that trust is knowing that intelligence can be shared confidently, and I will be making clear to President Trump today that intelligence that is shared between law enforcement agencies must remain secure."
British police have stopped sharing information about the attack with the United States due to concerns the leaks risked hindering their investigation.
(Reporting by Elizabeth Piper, Writing by Kylie MacLellan and William James in London; Editing by Alistair Smout)