2dn (LHS) Agile fellow's landed first on Cockney's house (10) There is an extra letter in the answer. Is it BLITHESOME? I have ?L?T?E?OME
17dn Live with server and turn against opportunist changing heart for poet (4-3, 7) the RHS is CHAUCER, so I think the LHS contains the extra letter.
I have ?E?A ?A?
The 3 letter A is from 25ac which seems to be TALLISH
All help appreciated. If anyone wants the clue for TALLISH, it's Composer to sit back absorbing everything