British Prime Minister Theresa May leaves after an extraordinary European Union leaders summit to discuss Brexit, in Brussels, Belgium April 11, 2019. REUTERS/Eva Plevier

LONDON (Reuters) - British government talks with the opposition Labour Party on finding a Brexit compromise cannot be open ended, Prime Minister Theresa May’s spokesman said on Wednesday.

The spokesman said working groups from both sides were pressing on with the talks this week, including a meeting to discuss financial services on Wednesday.