The British broadcasted rejected claims Brexit will lead to a "brain drain" in the British scientific field because of a loss of funding.
Mr Portillo said: "I rather doubt it would happen but I’m not an expert in the field.
"It seems to be logical, when we leave the European Union we will have more freedom to decide how we spend our money than we have now."
BBCMichael Portillo rejected claims Brexit will lead to researchers leaving the UK
The former MP rebuked physicist Sir Andre Geim's speculations claiming Brexit will lead young people to look for "better opportunities" in the remaining EU states.
Speaking on BBC This Week, Mr Portillo continued: "Your thesis seems to be that the great benefit of the European Union is that it forces its member states to spend money on stuff they wouldn’t otherwise spend their money on. I entirely reject that.
"I think the countries that are accountable democratically to a