Steve, I do not read the Mirror but I try to use Labour supporting papers and there are few left.
Are you saying the Mirror made up the story?

It is almost unheard of for an MP to give up Parliament for real work, but two Labour MPs have in recent weeks.

Huff. Post,
Jeremy Corbyn has declared that he is "not expecting" any more Labour MPs to quit - despite losing two backbenchers within a month.
The Labour leader also denied that he had "lost control" of his Parliamentary party in the wake of the resignation of former Shadow Education Secretary Tristram Hunt.