The only thing that might happen is the Blended Wing. The rest are just "Pie in the Sky". They are just not going to be commercially viable.
How do you schedule enough flights on the same route for formation flying?
I suppose the Atlantic could work and I'm sure the automatics can be developed to do it, but there would be wake turbulence to think about.
However if it keeps British jobs in the research game there must be some good in these ideas.
Thinks! Where do I get funding to research "Flying Pies"???
Just my thoughts!