1 Across, High - class English students stop celeb (7)
6 Across, Daughter,23,is German artist (7)
11 Across, Greek 23 isn't fussed about 0 degrees (10)
13 Across, Firm sets out to secure a French title for 23 (8)
[23 = Poet's daughter ultimately lost opening 0-1? ]
Compiler - RADIAN
Many Thanks