Cryptic crossword No 3,434

Across

1. Youngster with remedy (5)
2. Second language good for celebration (7)
3. Going off switching sides (2,3,4)
4. See 11a
5. Flowers (about 4) inside hollow receptacles (6)
6. Blundering around beneath (5)
7. Albion beaches messed up - it's a warning (7,6)
8. A married man in Westminster perhaps starts to erotically stroke Truss, getting most light-headed (9)
9. Arabic cue user snookered officials (13)
10. Hollow river plate (7)
11. Country in Africa is in utter regression (7)
12. Change journey (7)
13. Hold a South American horse (7)

Down

1. Design for shirt - circular stripe (9)
2. Chicken or mouse guarding Dahl's crocodile? (8)
3. Smart and pretty! (4)
4. Fuss about special treasures (6)
5. Draft rhetoric (4)
6. Amusing or ridiculous idiot? (9)
7. Alternative salary in Sunderland? (3,3)
8. French novelist embracing quiet university (6)
9. Hemingway re-sent novel (6)
10. Unpromising result experimenting with different fuse added (10)
11. Pride over survey with American for international accolades (10)
12. Battered vehicle a journalist possesses (6)
13. Side opposite actors like Dominic and Adam? (4)
14. Girl (25), born Elizabeth Wilder? (4)
15. One forgetting name unusually is held up over accountant (8)
16. These may disappoint when damp (6)