The Sunday Crossword No 3105, Sunday 21 Jun 2020

ACROSS
1   Tricky phrase that might produce stuttering woe? (6,7) TONGUE TWISTER*
8   Some herbal medicine? (4) BALM [T] &lit
9   Get below platform (10) UNDERSTAND {UNDER}{STAND}
10 Extremely fertile cat returned to admit misdeeds (4,2) FESS UP {Fe...lE}{PUSS<=}
11 Burrowing creature loses daughter, runs forward to reach Texan city (8) AMARILLO A(-r)MA(-d+r)RILLO
12 Piece of British landscape depicted in off-key, sad composition (5,4) OFFAS DYKE*

14 Puts on about 500 commercials (4) ADDS {AD{D}S}
15 Very good ... very good ... distinctly average (2-2) SO-SO {SO}{SO}
16 Unpleasant haircut that might be seen at tea time (6,3) STICKY BUN {STICKY}{BUN}

21 Alert: ‘Following boundary, Australian captain declared’ (8) FOREWARN (~ four warne)
22 Duchess, low in rank, obtaining grand husband? (6) MEGHAN {ME{G}{H}AN}
24 ‘Executive Search’ pro haunted her disturbingly (4-6) HEAD HUNTER*
25 Extensive head of hair, we’re told (4) MAIN {~mane)
26 Team Trump rent asunder, leading to explosion of rage (6,7) TEMPER TANTRUM*

DOWN
1   One that might be brewing or poaching? (3,4) TEA LEAF [DD]
2   Makes dull songs without hesitation (5) NUMBS NUMBerS
3   Pursued, trounced, commandeered (7) USURPED*
4   Primarily, trendy educational disquisition to advance latest knowledge? (3,4) TED TALK {Tr...y}{ED}{TALK} &lit
5   Sort of raid, no? (6) INROAD* &lit
6   Even now, toady's hit ferociously (2,4,3) TO THIS DAY*
7   Malodorous, the French starter of snails causes vexation (7) RANKLES {RANK}{LE}{Sn...s}
13 McEwan novel, Decapitated Pet Cuckoo’s Upset (9) AMSTERDAM {hAMSTER}{MAD<=}
15 Sit around, loiter endlessly with contemptuous expression (5,2) SHOVE IT {S{HOVEr}IT|
17 Little bird going round city in direction of very little one (4,3) TINY TOT {TI{NY}{TO}T}
18 Instigator of Brexit vote: ‘Country will lose nothing’ (7) CAMERON CAMERoON
19 A little unwisely, skull cap removed for heavy metal (7) URANIUM {Un...y}{cRANIUM}
20 Lunatic overcome by boundless ocean, misrepresented? (6) CANUTE {NUT} in {oCEAn}* &lit
23 Perhaps Guitar Hero fan offering a bit of Young Americans (5) GAMER [T]

Reference List

Daughter = D, Runs = R, 500 = D, Grand = G, Husband = H, Educational = ED