Labour Party UK
Ian Lavery also warns MPs considering leaving party would "almost certainly" lose their seat.
'Cooper amendment mark II' could be fronted by different MPs.
The party's deputy leader said behaviour towards the Jewish MP was "intolerable".
General secretary to share some figures after peers and MPs complaints.
The Jewish Labour MP is facing a vote of no-confidence in her constituency.
And the pro-EU MP says more could follow.
Labour leader wants commitment to customs union.
Would Corbyn and McDonnell be as free market as Blair and Brown? No, but there's much for business to like in the party's economic plans
Tensions flared during a debate over Windrush migrants