1: Page with scope for truism (9)
2: Dilapidated sofa contained initially some hot embers: something's burnt remains. (5, 2)
3: Make money and set out to be serious (7)
5: No one told sister (3)
6: Old physician in sheltered church (5)
8: Clean oneself, but in reverse (3)
12: Mr Stewart on the staff (3)
16: Piece of pottery containing drink to make beast tender (9)
18: Without it, set call for recompense (3)
19: Right, turn right to play with robot (3)
20: Almost admire Mr. Gore, a naval officer (7)
21: Ace swallows pastry tart (7)
22: Out of context rather more than is necessary (5)
23: Navigate by terse directions (5)
25: 4-down Arias hit high note in some of the lungs (3,3)
28: Plan to return with woman (3)