Gimlet Takes Over

2nd of 2 graphic adventures printed in The Adventures of Biggles #7 with 17 black & white pages.
Gimlet is asked to help the British convince a German aeronautical scientist to bring the plans of his new super-sonic aircraft to the UK and not the foreign goverment from the other side also after it and him.
Note: not a Biggles story but related and definitely a spy story.