The International Development Secretary has been criticised for holding undisclosed meetings in Israel without telling the Foreign Office.
Priti Patel is said to have met Yair Lapid, the leader of Israel's centrist Yesh Atid party, and visited organisations to discuss departmental business.
One meeting, while she was said to be on holiday in August, was held at the suggestion of Mark Regev, the Israeli ambassador to Britain.
According to the BBC, ministers have accused Ms Patel of conducting her own "freelance foreign policy" on Israel.