Simon Schama and Sir Malcolm Rifkind among those warning that annexation ‘would have grave consequences’ for Palestinians

Some of the most prominent and respected names in British Jewry have raised alarm over the Israeli government’s plans to annex parts of the West Bank, saying such a move would be an existential threat to Israel.

Among more than 40 signatories of an unprecedented letter to the Israeli ambassador to the UK are Sir Ben Helfgott, one of the best-known Holocaust survivors in Britain; the historians Sir Simon Schama and Simon Sebag Montefiore; the former Conservative foreign secretary Sir Malcolm Rifkind; the lawyer Anthony Julius; the philanthropist Dame Vivien Duffield; the scientist Lord Robert Winston; the former MP Luciana Berger; the Times columnist Daniel Finkelstein; and the author Howard Jacobson.