Thanks for the clarification. I’m not convinced any stats you can harness will make your case easier. Perhaps try searching online for UK jobs for Unity v jobs for Unreal and a picture may emerge without too much effort.
Are there any universities you can talk to about this, to see what they are doing with games courses these days and which engine skills it would be advantageous for you to give your students?
Personally there were no game courses when I was a lad so I am always envious. I like C# and I like visual stuff like blueprints too. If I were teaching, especially at intro level, then blueprints would have a number of obvious appeals to me so I am curious as to why your programming instructor doesnt want to go there. Visual scripting alone is not going to magically turn people who are disinclined to get their heads round programming into proper programmers but anything that can reduce the barriers to entry and reduce initial intimidation is a plus.