BREXIT talks have been extended as the chief negotiators for the EU and UK try to hammer out a last-minute deal.

Michel Barnier, head of negotiations for the European Commission, will stay in London until Wednesday for meetings with the UK's Lord David Frost.

The latest round of talks began after Barnier returned to London on Thursday.

He was scheduled to leave today but this has now changed.

Further talks are also scheduled to take place in Brussels next week, according to the BBC.

Appearing on the Andrew Marr Show this morning, Northern Ireland Secretary Brandon Lewis said the renewed talks are "a very good sign" that a trade agreement can be reached.

If that doesn't happen, the UK will have to trade with the bloc under World Trade Organisation rules when the transition period ends on December 31.

European leaders had said a deal must be struck by the end this month to allow time for it to be ratified by all the relevant parliaments before the year is out.

But earlier this month Boris Johnson accused the EU of failing to "negotiate seriously" and said the UK was preparing to leave without a deal.

Today Lewis said: "We have got to make sure it is a deal that works, not just for our partners in Europe... but one that works for the United Kingdom."

It's understood that state aid, fishing rights, post-Brexit competition rules and the enforcement of any deal remain sticking points.

Some critics fear a no-deal scenario will cause problems for businesses, but the government insists the UK will prosper.

Arriving last week, Barnier told the media "every day counts" and highlighted "huge common responsibility" on both sides.

Lewis said: "The EU need to understand it is for them to move as well, so that we can get a deal that works for the UK as well, a proper free trade agreement that recognises us as the UK being a sovereign nation."