london britain need set plan make sure lawyers keep work across europe brexit lobby group say thursday thecityuk say britain withdrawal european union also threaten international dominance english law prospect industry generate 31.5 billion pound 42 billion revenue last year group lobby financial legal service firm say urge government everything make sure brexit act barrier future growth opportunities stimulant include need secure mutual market access enable uk-based practitioners continue represent clients eu jurisdictions government need give detail plan convert eu rule govern industry domestic law process sign international conventions legal service make 1.5 percent uk economy employ 311,000 people thecityuk say report industry 200 foreign law firm set shop london english law use 40 percent global corporate arbitrations add choice english law global commercial contract part drive uk reputation lead center international dispute resolution report say others wait wing german federal state hesse promote conference early year look brexit provide opportunity frankfurt become new litigation hub europe 0.7560 pound british urge map post-brexit future lawyers