No 12605, Saturday 20 Apr 2019, Arden

Across

6. Bum — bottom end locked up (5) CADGE {CA{enD}GE} Locked up = Put in Cage,
7. He has his doubts about various coatings (8) AGNOSTIC { COATINGS*}
10. First we lie in wait, perhaps (7) INITIAL {LIE+IN+WAIT-WE*} Is the anno correct?
11. Light allowing regular passage through city (7) GLASGOW {GL{pAsSaGe}OW}
12. Barter trade and business style of architecture (3,4) ART DECO {TRADE*}{CO}
13. Too much! Reviewed tie breaker first (7) SURFEIT {SURF}{TIE<=}
14. Hairnet provided, bring down vegetable (11) CAULIFLOWER {CAUL}{IF}{LOWER}
19. Went through and through together, only missing one dimension (7) BREADTH {Bo{READ}TH}
21. May be bad sign in the middle (7) ABDOMEN {BAD*}{OMEN}
23. Rain too, in a way created the lake (7) ONTARIO {RAIN+TOO*}
25. Peacekeepers certain to go free (7) UNBOUND {UN}{BOUND}
26. Brown man in short is stranded (8) MAROONED {MAROON}{ED}
27. Foolish to take first step, must be mad (5) INANE {INANE}+{Step}={INSANE}

Down

1. Spies pick up, arrest criminal triad here at sea (8) ADRIATIC {CIA<=} around {TRIAD}
2. Cat on the iron rail (6) FELINE {FE}{LINE}
3. Catch European using cosmetic (4,6) NAIL POLISH {NAIL}{POLISH}
4. Obstacle to metals fusing (4) SNAG {SN}{AG}
5. One wrongdoing and joy is cut short (6) SINGLE {SIN}{GLEe}
6. Reptile able to swallow the end (6) CAIMAN {C{AIM}AN}

8. Bird making boom noise (7) SPARROW {SPAR}{ROW}
9. What's creating a wide strip (5) SWATH {WHATS*}
13. Amusing lad, turns out to be a mixed bag (10) SALMAGUNDI {AMUSING+LAD*}
15. On the contrary, overstay and suffer (7) UNDERGO (Opposite of {OVER},{STAY})
16. Nobel laureate had a doubt about this fruit (8) RAMBUTAN {RAM{BUT}AN}

17. A book carrying bishop over time becomes a friar (5) ABBOT {A}{B}{B}{O}{T}
18. Regular counsel, dogged but a bit nervous (2,4) ON EDGE {cOuNsEl DoGgEd}
20. Snare lifted in part, never fully (6) ENTRAP (T<=)
22. Call on line, cut short in capital (6) DUBLIN {DUB}{LINe}
24. Animal noise is allowed outside home (4) OINK {O{IN}K}

Reference List

Business=Co, Provided=If, Only=O, Peacekeepers=UN, Man in short=Ed
Spies=CIA, Iron=Fe, Metal=Sn, Metal=Ag, Doubt=But, Book=B, Bishop=B, Over=O, Time=T, Allowed=Ok, Home=In

Colour/Font Scheme

Definition, Solution, Component letters, Embedded links, Theme word,  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