Talks over a post-Brexit trade deal have resumed in London, after negotiators returned to the table following a week-long standoff. International Trade Secretary Liz Truss insisted a deal can still be done with the EU, as officials began a new round of "intensified" daily talks. EU chief negotiator Michel Barnier has warned that "every day counts" ahead of a looming December deadline. He said both sides share a "huge common responsibility" as talks restarted. Negotiations stalled last week after a summit in Brussels where EU leaders called on the UK to "make the necessary moves" towards a deal. But the UK side agreed to resume talks after Mr Barnier said "compromises on both sides" were needed, in a speech on Wednesday. UK 'ready to welcome EU' to continue trade talks Trade talks are back on - but what's changed? What are the sticking points in Brexit trade talks? Both sides are seeking an agreement to govern their trading relationship once the UK's post-Brexit transition period ends in January 2021. Key areas of disagreement include fishing rights, post-Brexit competition rules and how any deal would be enforced. Speaking after the UK formally signed its post-Brexit trade deal with Japan, Ms Truss said the UK also wanted to strike a "good deal with the EU". "We're in intense negotiations with the EU. We've made real progress," she told reporters on Friday. In an interview with the BBC, she added any agreement would have to be based "on the principle that the UK is a sovereign nation".