No 12249, Saturday 24 Feb 2018, Arden

Answer and anno for 20D left for a rookie commenter till 10 AM.

Across

1. Starts new demands, one among the employees creates the logjam (8) STANDOFF {STA{New}{Demands}{One}FF}
5. A subject relating to one's predisposition for allergic reaction (6) ATOPIC {A}{TOPIC}
10. Fungicide used in state, including capital (7) CALOMEL {CA{LOME}L}
11. Pay a bribe // to get a cash crop (3,4) OIL PALM (CD & D)

12. Indian movie about Indian wine (5) RIOJA {R{I}OJA}

13. Make a note, it's a complaint (9) ENTERITIS {ENTER}{IT}{IS}
14. Trial of militant on date (5-7) COURT-MARTIAL {COURT}{MARTIAL}
18. Substitute for Hindi? Drag in a former PM (6,6) INDIRA GANDHI {HINDI+DRAG+IN+A}*
21. He is ratting in other words (9) INTRIGANT {IS+RATTING*} (Correction {RATTING+IN}* - See comments} &lit
23. Expert handled pet on a regular basis (5) ADEPT {hAnDlEd PeT}
24. It's about food left over as drunk makes a noise (7) TROPHIC {PORT<=}{HIC}
25. Dirty — been so dirty and cold inside (7) OBSCENE {BEEN+SO*} around {C}
26. A sorry way to keep count (6) ROSARY {A+SORRY*} Way on double duty?
27. Perhaps David will cross Alps under a cloud (8) PSALMIST {ALPS*}{MIST}

Down

1. Tie up dog straying into the church (6) SECURE {SE{CUR}E}
2. Efflorescent, able, detailed, low and climbing (6) ABLOOM {ABLe}{MOO<=}
3. Harry enamoured by appearance (9) DEMEANOUR {ENAMOURED*}
4. There could be no issue with this condition (5,9) FALSE PREGNANCY (CD)
6. Layer of sorts with large instep (5) TILER {TI{L}ER}
7. Money chasing scheme involving American, could be one in a bunch (8) PLANTAIN {PLAN}{T{A}IN}
8. Arrived carrying loose soil in a piece of clothing (8) CAMISOLE {CAM{SOIL*}E}
9. Study of language limited to countries, they stymie things (14) CONTAMINATIONS {CON}{TAMIl}{NATIONS}
15. Comes into some money, picks up practice (9) REHEARSAL {RE{HEARS}AL}
16. Expelled nun from home is dark (8) SINISTER {S{IN}ISTER}
17. Books on crime relegated — second to eighth place (8) EDITIONS {(-s)EDITION(+S)}
19. I'm dividing money, I am an Arab (6) YEMENI {YE{ME}N}{I} I'm=Me?  See comments
20. Get set, take up some of them to bear witness (6) ?T?E?T ATTEST (T<=) See comments
22. Discharge, in which order? (5) ICHOR (T)


Reference List
State=Cal, Indian=I, Left=Port, Cold=C
Church=See, Low=Moo, Large=L, American=A, Study=Con, Money=Real, Nun=Sister, Home=In, Second=S, Money=Yen

Colour/Font Scheme

Definition, Solution, Component letters, Embedded links, Anagram Indicator, C/C indicator, Reversal Indicator, Hidden word Indicator, Letter Pick indicator, Deletion Indicator, Homophone Indicator, Movement Indicator, Positional Indicator, Substitution, Indicator, Link/Connector, Extraneous

GRID