Across:
1 One of those carrying weight perhaps (LIFTER) has a lot on his shoulders (LIFTER),
4 Drawing a (drawing a) criminal (= anagram indicator) (drawing a = AWARDING) handing out gold and silver (handing out gold and silver medals = AWARDING),
9 Grounds (GARDEN) for opening 14 across (opening ‘Garden of Eden’ = GARDEN),
10 Eve perhaps (GARDENER from Garden of Eden) is in on the plot (GARDENER),
12 Leading the pack (1st = -IST-) consumed by common sense (logic = LOG-IC-) bearing (bearing South = -S) (LOGISTICS) the supply of those in 21 across on the move (LOGISTICS is the supply of ‘troop’ on the move),
13 Arabian (HORSE) removes museum from summer house (removes ‘museum’ from ‘summer house’ = rhose = HORSE),
14 Opens 18 across (opens ‘garden centre’ = GARDEN) for Oscar (O-) Marsh (marsh/fen = -F -EN) welcoming journalist (Ed = -ED-) (GARDEN OF EDEN) to the first family’s home (GARDEN OF EDEN),
18 Recent (recent) trouble (= anagram indicator) (recent = CENTRE) after (= position indicator) 9 across (‘garden’ = GARDEN) (GARDEN CENTRE) leads to one cashing in on the Orange, Rose and Jasmine Revolutions presumably (GARDEN CENTRE),
21 Serves up (= reverse indicator) duck (-O-) covered in wine (wine/ port = TR-OP) (TROOP) in company (TROOP),
22 Watch (TIMEPIECE) for magazine (TIME-) article (-PIECE) (TIMEPIECE),
24 Produced (= anagram indicator) rap video (rap video = OVERPAID) to give them more than their due (OVERPAID),
25 Opening 11 down (opening ‘minor details’ = MINOR-) for school (-S) (MINORS) children (MINORS),
26 Great (G-) ancient (-OLD) suburb of Dublin (RUSH) (GOLD RUSH) that attracted those with prospects in the past (GOLD RUSH),
27 Small (S-) car (model -T- car) ran (-RAN-) down front (‘Down’ front = -D) (STRAND) to the water’s edge (STRAND).
Down:
1 Majority (legal age = LEGAL AGE) knocking back (= reverse indicator), for example (e.g. = -GE), a (A-) drink (lager) mostly (r) (‘lager’ without ‘r’ = lage = -EGAL) with port? (port/left = L-) (LEGAL AGE),
2 Those outside looking for food (FORAGERS) a long time (for ages = FORAGE-S) around end of the year (end of the ‘yeaR’ = -R-) (FORAGERS),
3 What’s the chances (EVENS) of veterans eliminating rat? (‘veterans’ eliminating ‘rat’ = veens = EVENS),
5 Wicket (W-) for bowler (-HAT-) – his companion (‘his’ companion = her = -HER-) is going back to pavilion (back to ‘pavilioN’ = -N-) consumed by same (S-AME) (WHATSHERNAME) person who slipped my mind? (WHATSHERNAME),
6 Blushing (RED) at what poseurs might say (what poseurs might say to cameraman = CHEESE) (RED CHEESE) in Leicester? (Red Leicester = RED CHEESE),
7 Fail to acknowledge (IGNORE) there is no spa in Singapore (there is no ‘spa’ in ‘Singapore’ = ingore = IGNORE),
8 Writing (from the 3Rs = -R-) in great (great = GAR-ET) novel? (= anagram indicator) (GARRET) An Attic Room With A View, perhaps! (GARRET),
11 Trivial matters (MINOR DETAILS) for vocal (= homophone indicator) gold digger (‘miner’ = ‘minor’ = MINOR) with military outfits (military outfits/squads = DETAILS) (MINOR DETAILS),
15 Leaving questions (Leaving Cert questions = EXAM PAPER) that could be best answered by those learning a lesson (EXAM PAPER),
16 Creates a bloody circulation problem (ATHEROMA) with two different articles (a + the = ATHE-) offering foreign capital (Rome = -ROMA) (ATHEROMA),
17 Put out (RELEASED) of meadows (-LEAS-) surround by grass (reed = RE-ED) (RELEASED),
19 Muscular type (STRONG) of skinhead (‘Skin’ head = S-) gets time (-T-), as it’s an offence (it’s wrong) to lose the head (w) (‘wrong’ without ‘w’ = -RONG) (STRONG),
20 Dig out (drill = BORE-) a (-A-) trainee (learner = -L) (BOREAL) from the north (BOREAL),
23 A score (POINT in Gaelic football) for Tipp (Tipp), by the sound of it (= homophone indicator) (‘tipp’ = ‘tip’ = POINT).