london britain aim secure comprehensive free trade deal european union want sign shortly leave bloc 2019 brexit minister david davis say sunday secure initial agreement friday move brexit talk second phase prime minister theresa may keen start discuss future tie eu especially type trade agreement try offer great certainty businesses despite davis strike confident tone eu officials say launch negotiations legally bind treaty britain leave become third country accord draft negotiate guidelines complicate come right back alignment point ... start full alignment start complete convergence work davis tell bbc andrew marr show thing manage divergence undercut access market say describe prefer deal canada plus plus plus eu consider post-brexit free trade deal britain along line one agree last year canada uk economy nearly twice size canada british officials say current alignment eu standards much close trade link continent give scope even deep relationship may hail many deeply divide conservative party rescue agreement unlock brexit talk offer eu member ireland ally northern ireland pledge avoid return hard border play word may agree two side fail agree overall brexit deal unite kingdom would keep full alignment rule eu single market help cooperation ireland north south davis describe commitment statement intent legally bind measure something might reassure hardline brexit campaigners fear could imply britain leave eu name despite last week progress may enjoy little respite second phase talk expect expose rifts top team minister britain look like leave eu saturday environment minister michael gove brexit campaigner open possibility change term agreement eu brexit britons felt deal reflect demand take back control british people dislike arrangement negotiate eu agreement allow future government diverge gove write column daily telegraph brexit uk aim trade deal eu top canada pact