(Please post comments on ONLY the picture quiz hereinbelow. To post comments on the crossword puzzle, please click here.) This wasn’t too difficult after getting the gateway clue (1,12). Thanks to Crucible. Definitions are underlined in the clues.
Across
1, 12 Writer, illustrator, top farceur and snooker player (7,6)
BEATRIX POTTER : BEAT(to top;to surpass) + RIX(Brian, English farceur, actor and campaigner) plus(and) POTTER(a snooker player)
5 Elemental form is uppermost in poet’s heart (7).
ISOTOPE : IS + [TOP(uppermost) contained in(in) the last letter of(…’s heart) “poet “].
10 Brave enormous halves switch sides (4)
GAME : MEGA(enormous) with [its 1st 2 letters and last 2 letters](halves) exchanging places(switch sides).
11 Climbing with difficulty, get lost jewellery (10)
SCRAMBLING : SCRAM!(get lost!;beat it!) + BLING(flashy jewellery, originally from hip-hop slang).
12 See 1
13 It’s for picking fruit et cetera, occasionally netted (8)
PLECTRUM : PLUM(a fruit) containing(… netted) the 1st, 3rd, 5th, 7th letters of(…, occasionally) “et cetera “.
Defn: … on the strings of a string instrument.
14 Trunk‘s for governor protecting social centre (9)
PROBOSCIS : PRO(for, in contrast to against;con) + [ BOSS(informally called “governor” or “guv”) containing(protecting) the central 2 letters of(… centre) “social“]. 
16 Dull Black Country character of 1 12 (5)
BLAND : B(abbrev. for “black”) + LAND(country).
Double defn: 2nd: …(Beatrix Potter) in “The Tale of Pigling Bland”.
17 Greens back US city, ousting Liberal (5)
SALAD : Reversal of(back) “Dallas”(US city) minus(ousting) “l”(abbrev. for “Liberal”).
19 Idiot pays criminal for property of 6 23 (9)
ADIPOSITY : Anagram of(pays criminal) IDIOT PAYS.
Defn: …(Samuel Whiskers), an enormous rat.
23 See 6
24 Bane of 26, teacher’s pet ultimately (6)
RABBIT : RABBI(a teacher of Jewish law) + the last letter of(… ultimately) “pet “.
Defn: …(Mr. McGregor) in Beatrix Potter’s stories.
26 Oddly, more mice busily gorge on rare 1 12 character (2,8)
MR MCGREGOR : The 1st, 3rd, 5th, 7th letters of(Oddly) “more mice ” + anagram of(busily) GORGE plus(on) R(abbrev. for “rare”).
Defn: … , a vegetable farmer.
27 A country’s seabirds (4)
AUKS : A + UK(abbrev. for for the United Kingdom)‘S.
28 Spots wine, then loses it (4,3)
SEES RED : SEES(spots;eyes) + RED(a category of wine).
Defn: Flies off the handle.
29 Prepare to print 50-peseta curtains (7)
TYPESET : Hidden in(… curtains) “fifty-peseta“.
Down
2 European guy mounts Guardian’s entrance (7)
ENAMOUR : E(abbrev. for “European”) + reversal of(… mounts, in a down clue) MAN(a guy) + OUR(self-referential possessive pronoun for the “Guardian”, presenter of this crossword).
Defn: …, as a verb;to enchant.
3 Daily crime perpetrated by 24s (5)
THEFT : [THE FT](abbrev. for the daily paper, the Financial Times).
Defn: …(rabbits) on Mr. McGregor’s vegetables.
4 Leaflets in series that is withdrawn for a short time (7)
INSERTS : IN + “series” with “ie”(abbrev. for “id est”;that is) replaced by(withdrawn for) “t”(abbrev. for “time”).
Defn: … inserted into newspapers, magazines and books.
6, 23 US male’s crazy about tiny margin for 1 12 character (6,8)
SAMUEL WHISKERS : Anagram of(… crazy) US MALE’S containing(about) WHISKER(a tiny margin, as in “he won the race by a whisker”).
Defn: … in “The Roly-Poly Pudding” or “The Tale of Samuel Whiskers”.
7 Everyone in the Times drinks? They’re incredible (4,5)
TALL TALES : ALL(everyone) contained in(in) T,T(twice the abbrev. for “time”) + ALES(beers).
8 English university invested in secure publisher (7)
PENGUIN : [ENG(abbrev. for “English”) + U(abbrev. for “university”) ] contained in(invested in) PIN(to secure;to fasten).
Defn: … of books.
9 Ginger had pics Photoshopped as part of this work (7,6)
GRAPHIC DESIGN : Anagram of(… Photoshopped) GINGER HAD PICS.
Such work could include pictures that have been photoshopped. A WIWD (wordplay intertwined with definition) clue. 
15 They give support thus, when they’re eaten by 24s (9)
BRASSICAS : BRAS(apparel that give support to female chests) + SIC(thus;a word inserted in brackets to indicate it was originally written or printed as such, no matter how odd or wrong it is) + AS(when, as in “as you are doing this”).
Defn: A genus of plants including cabbage, kale, broccoli, cauliflower, turnip, and mustard, food for rabbits.
18 A short way to get round hardwood supplier (3,4)
ASH TREE : A + “street”(a way;a thoroughfare) minus its last letter(short …) containing(to get round) “h”(abbrev. for “hard”).
20 Picture four rivers, one flowing into another (7)
PORTRAY : PO(a river in Italy) + R(abbrev. for “river”) + [ R(abbrev. for “river”) containing(flowing into) TAY(a river in Scotland) ]. That’s four “rivers” in all.
Defn: …, as a verb.
21 1 12 character ignores Iggy — stars do it (7)
TWINKLE : “Tiggy-Winkle”(character in Beatrix Potter’s “The Tale Of Mrs. Tiggy-Winkle”) minus(ignores) “Iggy “.
22 I’m surprised troops nearly block river (4,2)
DEAR ME! : “army”(military troops) minus its last letter(nearly) contained in(block) DEE(any of a number of rivers in the UK, and in Australia).
Answer: … or “Dearie Me!” exclamations of surprise.
25 Poet, painter and illustrator left to cook hogs (5)
BLAKE : L(abbrev. for “left”) contained in(… hogs) BAKE(to cook in the oven).
Answer: William, English poet, painter and printmaker.
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The following pictures have unidentified links to the puzzle.
 
  
 
 
 
(Please post comments on ONLY the picture quiz hereinbelow. To post comments on the crossword puzzle, please click here.)
Pic 5, the fictional detective Sexton Blake lived in Baker Street…
pic 1 is a PENGUIN crossing
Cookie @1, I thought it was another fictional detective who lived in Baker St (221B to be precise)
I would have thought #6 should be ‘the dog’s bollocks’ but can’t see the connection…
Kevin @3, Sexton Blake is known as the poor man’s detective – published in comics.
I can SEE RED in pic 6 (and I won’t mention which bits appear to be red).
Thanks Cookie @5
I was being just a little bit facetious.
#2 are umbrellas and there is a Beatrix Potter watercolour called ‘A gentleman and lady rabbit walking through the snow under an umbrella.’
Pic 4, has there been SCRAMBLING to get the aeroplanes quickly into the air?
pic 4 shows BOMBers.
In computing, a fork bomb (also called RABBIT virus or wabbit[1]) is a denial-of-service attack wherein a process continually replicates itself to deplete available system resources, slowing down or crashing the system due to resource starvation. (cut and paste from wikipedia “fork bomb”
Cookie @9 your answer is more likely to be correct than mine.
Billy Elliot was PORTRAYed by Jamie Bell in the movie
#4 are Heinkel He-111 bombers. He-3 is an ISOTOPE of Helium?
Pic 2, the genus BRASSICA belongs to the Umbelliferae meaning sunshade/umbrella
#4 Ah… the He-111 had a long PROBOSCIS-like nose
Pic 6 – the expression “the cat’s WHISKERS” means the best, like the dog’s bollocks
Well done Shirl; that must be it.
Shirl and Robi
just like the bee’s knees
I’m surprised no one has had a go at pic 7. So here goes. The story of Antony and Cleopatra is a TALL TALE.
#3 Could Billy Elliott be TWINKLEtoes?
pic 2 – in the Batman comics, the PENGUIN character always carries an umbrella
#7 Sir Peter BLAKE has a painting of Antony & Cleopatra
scchua, how are we doing?
pic 3 – Billy Elliot – there is a famous ballet called “the Tales of BEATRIX POTTER”
Great, Robi et al.
Pic1 Kevin, I’m sure those are pedestrians and not penguins crossing 🙂 . The closest I know of is a puffin pedestrian crossing
Pic2 The PENGUIN, enemy of Batman carries a loaded umbrella
Pic3 TWINKLEtoes could be an epithet for Billy Elliott
Pic4 There would be a lot of SCRAMBLING to get fighters in the air to meet that aerial attack
Pic5 Like Cookie, I too read the Sexton BLAKE stories
Pic6 The dog’s bollocks means the same as the cat’s WHISKERS
Pic7 ?
Shirl @21 is probably right, as pic 1 shows lots of umbrellas on the PENGUIN crossing
Thanks scchua
none out of five for me today.
#1 is a Shibuya SCRAMBLE crossing with people SCRAMBLING
The pedestrians will probably SEE RED before they finish their crossing.
#7 Well, Antony & Cleopatra were certainly Enamoured but no doubt there is a better connection.
#7 Cleopatra’s noble PROBOSCIS helped her to attract and distract Antony?
Two questions
Is pic 7 an example of a GRAPHIC DESIGN?
Am I up to none out of seven?
Pic 7, the quote from Antony and Cleopatra: “My SALAD days, when I was green in judgement and cold in blood”.
All done!
Pic1 Is a SCRAMBLE pedestrian crossing
Pic7 “… SALAD…”, a line from Shakespeare.
thanks scchua
Thanks scchua for the fun. Cheer up Kevin, I often fail to get any, got none on the quiz on Monday (Quiptic).
Thanks scchua; lots of fun.