Two law firms challenging British exports of F-35 parts to Israel have described a recent London court ruling on their case as “disappointing”, Al Jazeera reports.

Global Legal Action Network (GLAN) and Al-Haq say they are considering appealing the decision.

They also said it is now up to the UK Parliament to act, after the High Court said “it is Parliament’s role, not the court’s” to scrutinise if the “government decision to continue to arm Israel through the F-35 carve-out is consistent with its international law obligations.”

“The court’s decision, which continues to allow the UK to arm Israel, through the F-35 carve-out, is disappointing, however, our teams are looking into whether to appeal the judgment,” GLAN and Al-Haq said in a statement.

“Yesterday’s decision does not affect the UK government’s obligation under international law to prevent genocide and atrocity crimes.”