But British military chiefs and spies are said to doubt the legality of Mr Trump's lethal strikes and do not want their own intelligence being used to identify targets.
As a result, intelligence gathered from British overseas territories in the region is no longer being passed to the Americans, reports state.
Agencies such as GCHQ have previously fed information to American officials to help them arrest drug suspects.
Halting intelligence would be unprecedented, with the UK and US among the world's closest intelligence partners and joint members of the Five Eyes partnership.
