Rolls-Royce says Brexit will heighten investment risk
about the number of members it has.
Matthew Elliott, chief executive of Vote Leave, said: "The CBI's unflinching support for Brussels is simply not credible.
"They have consistently called it wrong on the EU, ranging from support for joining the euro to opposition to a referendum and support for the Exchange Rate Mechanism.
"Now they want us to believe that we can't take back control from Brussels and secure new trade deals.