1 - Such a sketch doesn’t have flesh and blood (8) - SKELETAL [DD]
5 - Pieceworker, Jack, old boy, gets some numbers (6) - {J}{OB}{BER}
9 - Gun put in hold, our sailors lost in the boat races (7) - {RE{GAT}TA
10 - Stubborn person overwhelms females with red scarf (7) - {MU{FF}LE}{R}
11 - Sherpa got flustered in a cluster of projectiles (9) - GRAPESHOT*
12 - Is he fit to be a takeaway person? (5) - THIEF*
13 - Among a small number there’s an engineer: one leading a high life (4) - {I{BE}X}
14 - Tucker, for one, sung about weapons (5,4) - {TOMMY} {GUNS*}
17 - Odd, fifty left for new youth leader for a kind of reward (9) - {PECU
19 - Perhaps evangelists hold a recess (4) - APSE [T]
23 - Under a false name, briefly (5) - INCOG [CD]
24 - Painter holding a hot section for islanders (9) - {T{A}{H}ITIAN}{S}
25 - Not straightforward, like a crossword clue! (7) - CRYPTIC [CD]
26 - Perm Sue worked out is the best of all (7) - SUPREME*
27 - Don’t outstanding workers take part in these strikes? (3-3) - SIT-INS [CD]
28 - You and me inquisitive — not about a description of an exceptional interest (8) - {US}{
DOWN
1 - Gasolier refurbished at women’s quarters in palace (8) - SERAGLIO*
2 - Chisel image finally with graven designing (7) - {E}{NGRAVE*}
3 - Specialist gets bay perhaps for a starter (6) - {ENT}{REE}
4 - Isn’t archaic? No, just becoming outmoded (13) - ANACHRONISTIC*
6 - Near-offer about torn tags kept away from public view (3-5) - {OFF-{STAG*}E
7 - Bobby’s leader coming up with big money (7) - {BILL}{ION<-}
8 - Become thinned with ugly fare on board (6) - R{AREF*}Y RY and on board? I'm not clear
10 - Transformation brought about by aphorisms to the latter half of them (13) - {ME*}{TAMORPHOSIS*}
15 - Conducting element (8) - TUNGSTEN [E]
16 - Estimate again: to be diverted are ships carrying drug (8) - {REA*}{SS{E}SS}
18 - Variable parking in chaotic centre not completed, put in a code (7) - {ENCR{Y}{P}T
20 - Identify unpleasant smell, but this doesn't make cure possible (7) - {PLACE}{BO}
21 - Endlessly talk about freshwater aquarium fish (6) - DISCUS
22 - Dazed feeling increased when in shop mostly (6) - {ST{UP}OR