British MPs back 2 Brexit deal changes sending PM back to EU

British MPs have voted in favour of a proposal that calls on the government to replace the so-called Irish backstop with an alternative, in a last-ditch attempt to renegotiate Brexit.

An anti-Brexit placard near the British Parliament. Source: AAP

Theresa May has vowed to return to Brussels to renegotiate the "backstop" but the EU says it's not up for debate.