Glad I got one of the last T shirts then!
I have Doris for 5a. That being slang for a wife and the Austrian first lady at present.
6d i have ratio, that being more than half the component letters of 8a.
Ratio fits in with my answer for 10a.
I could be completely on the wrong tack of course.
I could do with help please for 11a. Poet: That herite study. I have m?y?e? I cannot parse my answer.
I also have semtex for 13a. Not sure how that all fits. The tex I get.
Thanks to all.