1 across. One’s surprisingly successful. 12 letters.
9 across. One’s not at all successful. 5 letters.
10 across. Single pay-out. 4 letters and 3 letters.
11 across. Ball of thread. 4 letters.
12 across. Topped by breadcrumbs and cheese. 2 letters and 6 letters.
14 across. More elegant. 6 letters.
15 across. Fanatical individual. 6 letters.
18 across. Calls out. 8 letters.
20 across. The largest continent. 4 letters.
22 across. Leaped (over). 7 letters.
23 across. Reasoning. 5 letters.
24 across. Speciality food shop. 12 letters.