London and South East England are set to account for 40 percent of the economy by the end of the next parliament’s mandate, said Britain’s trade union body TUC in a written statement. That’s up from 37.5 percent in 2015 and 33 percent in 1997, and a sign of an unbalanced economy according to TUC. London alone now accounts for 25 percent of the entire economy (with just 15 percent of the population).