Zipped through the top half then came to a shuddering halt. Help please with any of these:
27A
Apprehends miscreant offloading hot pages from books (9)
- - - - - - E - S
19 D
Scout in tipi one erected (7)
B[?] - - - - - -
Eventually I got PIONEER for scout, for a long time completely missing the fact that it was in the words of the clue and had nothing to do with a tent or tipi.