Many companies have already drawn contingency plans in case Britain makes an uncontrolled departure from the EU, according to the Confederation of British Industry (CBI), which also attended the meeting with May.
Will Catalonia's unilateral declaration of independence encourage other European regions to launch similar political movements?
Spain moves to take over the running of Catalonia after the rebellious region's parliament unilaterally declaring independence. So what happens now?
Calls for a boycott of Catalan food, cars and other goods, to punish the region for its separatist push, are worrying businesses who fear the economy will suffer.
Spain’s prime minister has asked the head of the secession-minded Catalonia region the question that no one can seem to answer: Did he declare independence or not?
As Spain braces itself for a possible independence declaration by Catalonia's separatist leader, Madrid refuses to rule out imposing direct rule.
King Felipe VI condemned pro-independence politicians in Catalonia for damaging national unity and called on the state to restore the "constitutional order and normal functioning of institutions."