The discussion about Action Man over in Project Sword Toys (yes I am following you too) reminded me of this book. Over in the USA it was GI Joe and his space capsule that captured my interest in the 1960s. Action Man was the UK equivalent, but he also had several books of his adventures issued.
The story is kind of insipid about enemy spies in orbit but I love all space art illustration and Action Man has a great determined/tough guy look on his face. None of the US Astronauts in 1967 seem to look as tough.