Clues were a little wordy, but pretty easy. Last one in was 22A, not a hard word but not super common!

Across

1

Selfish team found locked in container at sea (13)
INCONSIDERATE — SIDE (team) in anagram (at sea) of CONTAINER

9

Established proposal shown by TED (7)
PLANTED — PLAN (proposal) TED

10

People locked away one man involved with set-back? (7)
INMATES — I (one) anagram (involved) of MAN, reversal (back) of SET

11

I returned brown rice promptly (2,1,5)
IN A TRICE — I, reversal (returned) of TAN (brown) RICE

12

Sweet little baby that girl placed in the arms of youngster (6)
CHERUB — HER (that girl) in CUB (youngster)

13

Carry out training with drugs (4)
DOPE — DO (carry out) PE (training)

14

A builder might use one dating agency? (4,6)
STUD FINDER — cryptic def.

18

Team fitted inside stretch form of transport (5,5)
STEAM TRAIN — TEAM in STRAIN (stretch)

19

Ingredient of herbal medicine? (4)
BALM — hidden in herBAL Medicine, &lit

22

Violent disagreement by America after union gathering (6)
RUCKUS — RUCK (union gathering) US (America)

24

Naive one put number in grant (8)
IGNORANT — I (one) NO (number) in GRANT

26

Specialist bakery that is quiet in view of father (3,4)
PIE SHOP — IE (that is) SH (quiet) in POP (father)

27

Wear rose cultivated by one working (7)
EROSION — anagram (cultivated) of ROSE, I (one) ON (working)

28

Clinic wrongly claimed money - concerning (7,6)
MEDICAL CENTRE — anagram (wrongly) of CLAIMED, CENT (money) RE (concerning)

Down

1

Little devil didn't tell the truth as suggested (7)
IMPLIED — IMP (little devil) LIED (didn't tell the truth)

2

Sour fruit roll included in ordered parcel (4-5)
CRAB-APPLE — BAP (roll) in anagram (ordered) of PARCEL

3

Vote against judge engaging a deed certifier (6)
NOTARY — NO (vote against) TRY (judge) containing A

4

Indian, dropping off an actor, upset guide (9)
INDICATOR — INDIan without an, anagram (upset) of ACTOR

5

A few of them irritated a powerful chieftain (4)
EMIR — hidden in thEM IRritated

6

Amateur arranged march and song (8)
ARMCHAIR — anagram (arranged) of MARCH, AIR (song)

7

Key component of violent eruptions (5)
ENTER — hidden in violENT ERuptions

8

Is round obstacle something that may be found on a map? (6)
ISOBAR — IS O (round) BAR (obstacle)

15

Nothing in dilapidated dwelling is thriving (5,4)
DOING WELL — anagram (dilapidated) of DWELLING containing O (nothing)

16

A little alcohol, right, ignored by artist and writer (9)
DRAMATIST — DRAM (a little alcohol) ArTIST without r (right)

17

A medium, very tired, is taken by surprise (8)
AMBUSHED — A M (medium) BUSHED (very tired)

18

Heavenly creature, perhaps, not handling pressure changing (6)
SERAPH — anagram (changing) of PERHApS without p (pressure)

20

Covering one born in a daytime delivery (7)
MATINEE — MAT (covering) I (one) NEE (born)

21

Warning issued by golfer carrying on, as an example (3,3)
FOR ONE — FORE (warning issued by golfer) containing ON

23

Light-coloured carbon paper? (5)
CREAM — C (carbon) REAM (paper)

25

Clip taken from the picture is impressive (4)
EPIC — hidden in thE PICture