According to this "Variety" article, written by Stewart Clarke (International Correspondent) US Media Giants are eyeing-up UK media companies- including ITV - due to the weak UK currency.

LIberty Global already has a 9.9% stake in ITVplc.
Viacom own Channel 5, however, since their purchase the amount of US aquired programming has decreased. The channel has invested in UK- originated material.

In his article, Stewart quotes Kevin MacLellan- chairman of global distribution of NBC Universal- “We have invested a billion dollars in production in the U.K. in the past three years,” he says. “I don’t see that slowing as a result of Brexit. … There is too much talent and too many advantages in that market for us to slow that down.”.