We don't need to worry about building our own, there's loads of others out there we can use.
Its all really easy once we're free of theses EU shackles - we'll be free just to negotiate our own deals with someone and they're all willing to give us the best deals in the world because we're British, we're important. China will be more than willing to help us use their system, probably give us access for free.
#Sarcasm. Project Fear? Project Truth as it turns out.