With the TL;DR caveat on comments
surely there is an absolute fortune to be made here. It matters not a jot that unicorns don't really exists. If Theresa May is continuing to insist they do, then surely she'd be willing to spunk a few million on them.
Don't worry about being exposed by an "expert" we all know they're biased anyway. And if one should get close, just suggest it's just jealous because they didn't think of it first.
We could trumpet it to the world as a sterling example of post-Brexit British excellence.