NEW YORK (TheStreet) -- After the U.K. voted to leave the European Union (E.U.) last week, the uncertainty surrounding the decision continues to mount leading to pressured markets across the world on Monday, including the U.S.

In addition some business owners in London, who rely on trade within the E.U., are worried about how the split from the rest of the 27 countries in the union will affect their prices, CNBC's Sara Eisen reported on "Squawk on the Street" this morning.

"We encountered nervous business owners who depend on European products. They're preparing to pay higher prices and may eventually have to pass that onto the consumers," Eisen continued.

Tim Mapara, manager of Spanish restaurant Hola Paella, told Eisen he gets most of his ingredients from Spain and France.

"Everything that we import I'm sure is going to get affected," Mapara stated.

The older generations are typically the ones who voted to leave the U.K. while Millennials, for the most part, opted to remain, Eisen added.

The Dow Jones continues to slip late this morning by about 284 points, the S&P 500 by around 93 points and the NASDAQ by about 36 points.