Okay, but I think you are missing the heart of the hypothetical situation. It's not a question of who made the frame, but that the frame in question is a Raleigh Clubman frame with different decals on it. For there to be an ethical dilemma here, the frames have to be the same. Not a Lenton Tourist frame, not a RRA frame, not a DL-1 frame. It has to be a Clubman frame. No difference. Indistinguishable from a Clubman. Identical. If the Glider does not have exactly the same frame as a Raleigh Clubman, then it is clearly unethical to pretend it is a Raleigh Clubman. The question of ethics comes up only after we establish that it is exactly the same frame as a Raleigh Clubman.

The Raleigh Clubman came with other distinctive features, such as a Williams crank with a special chain ring with herons on it. I presume the Glider lacks the heron chain ring, and it may even have a different crank. I wouldn't worry about that, though; many Raleigh Clubmans have had a component or two changed over the years.