Former shadow minister Chuka Umunna, a supporter of Remain, took to Twitter to make clear his anger.
Former shadow minister Chuka Umunna - once a favourite to replace Ed Miliband as Labour leader - has dismissed reports that he was being lined up to challenge Mr Corbyn before the next general election.
Not exact matches
The first big test of Mr Corbyn's new authority is whether he can persuade big beasts, such as
former Cabinet
minister Yvette Cooper and
former shadow business secretary
Chuka Umunna, to serve under him in the
shadow cabinet.
Some 49 Labour MPs joined a group including the SNP and Liberal Democrats in voting in support of the amendment tabled by
former shadow cabinet
minister Chuka Umunna.