london britain believe quickly agree framework transitional agreement exit european union prime minister theresa may spokesman say tuesday even stark differences brexit timeline persist britain seek so-called implementation period around two years follow departure eu march 2019 access eu single market would stay largely unchanged new arrangements put place businesses keen see detail deal soon possible end uncertainty trade rule face britain leave bloc term broad outline implementation period believe agree quickly may spokesman say provide detail britain hop reach agreement clear want achieve implementation period believe priority provide certainty business say may leave businesses confuse monday say implementation period would agree deal strike britain future trade relationship bloc counter expectations transitional deal would come well deal trade also highlight clear difference britain eu trade deal would agree britain seek ambitious deal trade eu replace exist arrangement end implementation period believe current close tie bloc mean deal agree october 2018. eu chief negotiator michel barnier say would take three years negotiate trade deal mean talk start december would ready time end transition period run december 2020. response ask britain position could still achieve trade deal end next year two-year exit process may spokesman say yes comment timeline set britain eu official say bloc want define framework future relationship time next year withdrawal treaty could take account future term article 50 legal exit process however official say eu negotiate detail free trade deal britain actually leave march 2019 eu laws allow negotiate trade agreements members article 50 say withdrawal agreement take account future relationship know term partnership eu exit spokeswoman may say ask position set eu official detail subject negotiation pre-empt uk see swift deal brexit transition outline still odds eu trade