Theresa May has returned to London after talks in Brussels with the President of the EU Commission Jean-Claude Juncker which were described in a joint statement as "useful and constructive". It is said that as well as discussing measures to preserve the Iran nuclear deal, they agreed that Brexit negotiations should accelerate in the months to come. With EU leaders due to gather in Brussels for a summit at which they'll review progress in the talks on Thursday, the process remains deadlocked. Dr Michael Fuchs, vice chairman of Angela Merkel's centre-right party, the Christian Democratic Union, discusses the direction of talks. (Image: flags in Brussels, credit: Getty)