U.K. tech leaders are becoming increasingly frustrated and shifting their focus to the U.S.—here's why

Rich Pleeth, co-founder of friend-finding app Sup, poses for a photograph at their offices in London, U.K., on Wednesday, March 9, 2016. A German firm agreed to kick in 100,000 pounds ($142,000) to fund Sup's growth, then British Prime Minister David Cameron called a referendum on membership in the European Union for June 23 and with polls showing the result could be close, the investor backed out. Photographer: Chris Ratcliffe/Bloomberg via Getty Images (Credit: Chris Ratcliffe—Bloomberg/Getty Images)

It was the moment British entrepreneur Rich Pleeth had been dreading, but he knew it was coming, so he was prepared for it.

“We’re all in,” the U.S. investor told him. “But we’ll need you to become a Delaware C corp.”