Ehud Olmert, Israel's prime minister during the Gaza war, would probably face arrest on war crimes charges if he visited Britain, according to a UK lawyer who is working to expand the application of "universal jurisdiction" for offences involving serious human rights abuses committed anywhere in the world.

Neither Olmert nor Tzipi Livni, the foreign minister during the Cast Lead offensive, and a member of Israel's war cabinet, would enjoy immunity from prosecution for alleged breaches of the Geneva conventions, predicted Daniel Machover, who is involved in intensifying legal work after the controversial Goldstone report on the three-week conflict. Neither are ministers any longer.

Prosecutions of Israeli political and military figures remain likely despite the failure to obtain an arrest warrant for Ehud Barak, the defence minister, when he visited the UK earlier this month, he said. In the Barak case a magistrate accepted advice from the …