19d - mass proletarian uprising over introduction of expensive cheese (3,5) - ?E? ????E - bel paese? can see pleb but not rest of clue
22d - her descendents were doomed in african capital (6) - ?O???A
25d - warm tea leads to friendly exchanges (5) - C???E - cooee?
26ac - revolting, tailless dog in cage (4) - ?O??
29ac - four english scoundrels advanced and joined up (7) - C???I??