The field of six candidates will narrow further, with at least one set to be knocked out of the race.
Deputy leader Tom Watson urges his party to back a new Brexit vote and wholeheartedly fight for Remain.
Labour's Stella Creasy hits out at Parliament's rules, which do not recognise maternity leave.
Failure to reach a deal would lead to "a total loss of rights for British nationals in the EU", a Tory MP says.
A report by MPs urges the UK government to end the era of throwaway clothes and poor working conditions in the fashion supply chain.