The UK has broken with the Biden administration on a significant part of their tightly coordinated policy towards Israel by announcing it is suspending some arms export licences to Israel because of a “clear risk” they may be used to commit or facilitate a serious violation of international humanitarian law.

The Foreign Office said a two-month internal review had raised concerns about the way Israel had conducted itself in the conflict in Gaza and that the decision specifically related to concerns around the treatment of Palestinian detainees and the supply of aid to Gaza.

No definitive conclusion has been reached about whether UK arms export licences have contributed to the destruction in the territory. But the scale of the devastation and the number of civilian deaths caused great concern, the Foreign Office said.