No 13210, Thursday 01 Apr 2021, Vulcan

Solution to 24A has been deliberately left unsolved and is to be answered only by a non-regular / novice commenter, with proper annotation. Those who have answered earlier in the week, please give others a chance.

ACROSS

1   A controversy brewing in glasshouse (12) CONSERVATORY*

10 Standard time followed, say (7) AVERAGE {AGE}<=>{AVER}

11 Circular field left untidy (7) LEAFLET {LEA}{LEFT*}

12 Disconnected from a very dry page — boring (6) ABRUPT {A}{BRU{P}T}

13 It’s not a colourful story? (5,3) WHITE LIE [CD]

15 Supporters present in stand going wild (9) ADHERENTS {AD{HERE}NTS*}

16 Dark horse, say (5) NIGHT (~knight)

17 Son’s delighted — heading off, full of energy (5) SAPPY {S}{hAPPY} 

19 Metal pane, perhaps one attached to a door (9) NAMEPLATE*

22 Freed/ let out again (8) RELEASED RE-LEASED

24 Emotionally affected without end — you got me (6) ?O?C?E (Addendum - TOUCHE TOUCHEd - See comments)

26 State evacuated one thousand people — basically huge (7) IMMENSE {StatE}<=>{1}{M}{MEN}

27 Partnering with a left leader that’s two-faced (7) ALLYING {A}{Left}{LYING}

28 Misuse of the semantics draws criticism (12) CHASTISEMENT*

DOWN

2   In another resort is where we are (2,5) ON EARTH*

3   It’s all men do (4,5) STAG PARTY [CD]

4   Be in shock and look upset (4) REEL<=

5   Nothwithstanding an absence of diversity (3,3,4) ALL THE SAME [DD]

6   Old section with abstract style (2,3) OP ART {O}{PART}

7   Christmas cake you will reportedly book (4,3) YULE LOG (~you'll){YULE}{LOG}

8   New map covering a North American country (6) PANAMA {P{A}{NA}MA*}

9   Missing the first biggest show (6) ATTEST fATTEST

14 No matter what happens in New York, a contest goes about (2,3,5) IN ANY EVENT {IN}{A}{NY}{EVENT}

16 Don’t worry about it — easy peasy (2,7) NO PROBLEM [DD]

17 Mark runs through injury (6) STRAIN {ST{R}AIN}

18 Controversial European on microphone (7) POLEMIC {POLE}{MIC}

20 Sale of university in process (7) AUCTION {A{U}CTION}

21 Come out with energy and mingle (6) EMERGE {E}{MERGE}

23 With it, chap nearly choked (5) APNEA [T] Semi&lit

25 Crazy clubs (4) BATS [DD]

Reference List

Page = P, Son = S, Thousand = M, Old = O, Runs = R,  University = U, Energy = E