ACROSS
7 Commotion over spilled gin by a drunkard left out in the dinghy (6,4) ROWING BOAT {ROW}{GIN*}{BlOAT} Drunkard/Bloat? See comments
9 Fertilizer making the bureau lose margins (4) UREAbUREAu
10 Rai escapes from Bahrain behind a motor vehicle on the road (8) AUTOBAHN {AUTO}{BAHraiN}
11 Part of a pearl appearing in a winter cap attachment (6) EARLAP [T]
12 Kitchen employing bakers awaiting Benny's first recipe for a Middle-Eastern dish (5) KEBAB Acrostic
13 Notice rather strange surroundings for one of a group of metallic elements (4,5) RARE EARTH {RATHER}* over {EAR}
14 Go back on a promise to run away after a green transformation in the middle of a French street (7) RENEGUE {R{GrEEN*}UE}
17 Expert conductors' host from the east entertained by a trim Frenchman at the wrong place (7) MAESTRI {SEA<=} in {(+m)MTRI(-m)}
20 Doctor advised to include a note with the supplements (9) ADDITIVES {ADDI{TI}VES*}
22 He may deliver lines and ham? (5) ACTOR [CD]
25 Cushion the wet cleric's feet (6) SOFTENAnno pending (Addendum - SO(-dd+ft)FTEN - See comments)
26 Lobby to tame the rude apes (8) PERSUADE*
27 Italian behind the British pub reportedly enjoying success (2,2) IN IT (~inn){IN}{IT}
28 Took Beck's wild horse inside to get an item in the artist's supply (10) SKETCHBOOK {TOOK+BECKS}* over {H}
DOWN
1 Time for the maiden with the book to get a spiral scroll (6) VOLUTE VOLU(-m+t)TE
2 Van Gogh amazingly conceals an ancient Celtic alphabet (5) OGHAM [T]
3 Roman robes protecting bridge opponents from an inflammable mixture (4,3) TOWN GAS {TO{W}{N}GAS}
4 Create new environment for the alien to produce a substitute for the dropped items (2,6) ET CETERA {ETC{ET}ERA*}
5 Aquatic rodent's voice lifts up after finding an oil source (6) NUTRIA {NUT}{AIR<=}
6 German with a brisk pace fetches an ornamental bottle (8) DECANTER {DE}{CANTER}
8 Ireland confiscates silver under the retreat gate from an early metalworking period (4,3) IRON AGE {I{NOR<=}{AG}E}
15 Find the English on top of the odd net throughout (3-2-3) END-TO-END {E}{ODD+NET}*
16 Policies furthering rights of workers providing support for the North in the American Civil War (8) UNIONISM [DD]
18 Collapse after a double hundred upsets Greek character boarding the northbound bus (7) SUCCUMB {SU{CC}{UM<=}B<=}
19 Reorganized the department and fired the enticing person (7) TEMPTERdEPaRTMEnT*
21 All things considered, it's fashionable to pull on the radio twice (2,4) IN TOTO {IN}{TO}(~tow){TO}(~tow)
23 JB's payment for this might be irregular (3-3) ODD-JOB {JoB}
24 Plant for a girl (5) ERICA [DD]
GRID
7 Commotion over spilled gin by a drunkard left out in the dinghy (6,4) ROWING BOAT {ROW}{GIN*}{B
9 Fertilizer making the bureau lose margins (4) UREA
10 Rai escapes from Bahrain behind a motor vehicle on the road (8) AUTOBAHN {AUTO}{BAH
11 Part of a pearl appearing in a winter cap attachment (6) EARLAP [T]
12 Kitchen employing bakers awaiting Benny's first recipe for a Middle-Eastern dish (5) KEBAB Acrostic
13 Notice rather strange surroundings for one of a group of metallic elements (4,5) RARE EARTH {RATHER}* over {EAR}
14 Go back on a promise to run away after a green transformation in the middle of a French street (7) RENEGUE {R{G
17 Expert conductors' host from the east entertained by a trim Frenchman at the wrong place (7) MAESTRI {SEA<=} in {(+m)MTRI(-m)}
20 Doctor advised to include a note with the supplements (9) ADDITIVES {ADDI{TI}VES*}
22 He may deliver lines and ham? (5) ACTOR [CD]
25 Cushion the wet cleric's feet (6) SOFTEN
26 Lobby to tame the rude apes (8) PERSUADE*
27 Italian behind the British pub reportedly enjoying success (2,2) IN IT (~inn){IN}{IT}
28 Took Beck's wild horse inside to get an item in the artist's supply (10) SKETCHBOOK {TOOK+BECKS}* over {H}
DOWN
1 Time for the maiden with the book to get a spiral scroll (6) VOLUTE VOLU(-m+t)TE
2 Van Gogh amazingly conceals an ancient Celtic alphabet (5) OGHAM [T]
3 Roman robes protecting bridge opponents from an inflammable mixture (4,3) TOWN GAS {TO{W}{N}GAS}
4 Create new environment for the alien to produce a substitute for the dropped items (2,6) ET CETERA {ETC{ET}ERA*}
5 Aquatic rodent's voice lifts up after finding an oil source (6) NUTRIA {NUT}{AIR<=}
8 Ireland confiscates silver under the retreat gate from an early metalworking period (4,3) IRON AGE {I{NOR<=}{AG}E}
15 Find the English on top of the odd net throughout (3-2-3) END-TO-END {E}{ODD+NET}*
16 Policies furthering rights of workers providing support for the North in the American Civil War (8) UNIONISM [DD]
18 Collapse after a double hundred upsets Greek character boarding the northbound bus (7) SUCCUMB {SU{CC}{UM<=}B<=}
19 Reorganized the department and fired the enticing person (7) TEMPTER
21 All things considered, it's fashionable to pull on the radio twice (2,4) IN TOTO {IN}{TO}(~tow){TO}(~tow)
23 JB's payment for this might be irregular (3-3) ODD-JOB {J
24 Plant for a girl (5) ERICA [DD]
GRID