The Sunday Crossword No 3088, Sunday 23 Feb 2020

ACROSS
1   President grandly dines, leading to gym session (5-3) PRESS-UPS {PRES}{SUPS}
5   Invention that secures part of level crossing (6) VELCRO [T]
10 Report following that woman’s affair (7) SHEBANG {BANG}<=>{SHE}
11 Russia’s banks fiddle endlessly with cases from Italy (7) RAVIOLI {Ru..iA}{VIOLIn}

12 A little dab at Ikea fabric (5) BATIK [T] Batik is not a fabric but a technique of applying dye
13 Dislocated nine noses? Definitely not (2,2,5) IN NO SENSE*
14 Why so blue, kid? Regrettably, it's the drink (6,6) DOUBLE WHISKY*
18 Uninjured, rare bird almost crashed into something met at high speed (5,7) SOUND BARRIER {SOUND}{RARE+BIRd}*
21 Recklessly races back for pescatarian’s dish (4,5) CRAB CAKES*

23 Next to west section of church, left a kind of orange (5) NAVEL {NAVE}{L}
24 Oaf’s to run about, in a way (2,1,4) OF A SORT {OAFS+TO+R}*
25 Opens a French port and sips (to begin with) (7) UNCORKS {UN}{CORK}{Sips}
26 Shocked? About time to become experienced (6) TASTED {TAS{T}ED}
27 So splendid (4,4) VERY GOOD [DD]

DOWN
1   Ignore eyewitness without hesitation (4.2) PASS BY PASSerBY
2   Lets out what a Cockney comic does, we’re told (6) EGESTS ( ~ 'e jests)
3   Cask of don drunk with crisps, etc (5,4) SNACK FOOD*
4   Silk pants being laid out as festive treat (4,2,8) PIGS IN BLANKETS*

6   Tolkien’s language not hard, reveals the King (5) ELVIS ELVISh

7   Colonel ingests oxygen atop headland, showing aplomb (8) COOLNESS {CO{O}L}{NESS}
8   Cartoon character sounded kind of fat (5,3) OLIVE OYL (~ olive oil)

9   A curry, beer cans laid out as festive treat (9.5) CRANBERRY SAUCE*

15 Tint with blubber, leading to commotion (3,3,3) HUE AND CRY {HUE}{AND}{CRY}
16 Intimidate and turn spy with touch (5,3) PSYCH OUT {SPY+TOUCH}*
17 Alcoholic aficionado on vacation, scoundrel’s drinking orangey liqueurs (8) CURACAOS {Al...iC}{Af...dO} in {CURS}

19 Clever? Solomon? To some extent? To a huge extent! (4,2) EVER SO [T]
20 Miss getting into album? Shut up (6) CLOSED {C{LOSE}D}
22 What goes in mulled wine? Bit of cinnamon, dear (5) CLOVE {Ci...n}{LOV

Reference List
Left = L, Run = R, Time = T,  Hard = H, Oxygen = O