G.I. Joe box art or genuine concept art from a 90's British Aerospace company?

From a longer thread:

AVPRO ART MEGA THREAD

By 2000, now defunct British aerospace company Avpro had produced a wealth of art depicting futuristic naval and aerospace concepts. pic.twitter.com/JxcBSRkDB7

— Mike (@Mikethehuman_) August 25, 2020

pic.twitter.com/x0LQ1trys4

— Mike (@Mikethehuman_) August 25, 2020

pic.twitter.com/KDsVEarYMF

— Mike (@Mikethehuman_) August 25, 2020

pic.twitter.com/AqcMoiZRsh

— Mike (@Mikethehuman_) August 25, 2020

An old forum discussion about the designs.