Cryptic crossword No 3,459

Across

1. A great deal of work for the auctioneer (4)
2. Rashness from peacekeepers expecting society to stop hostility (5,5)
3. Green drink, according to liberal 'a hidden gem' (10,5)
4. Corrupt as 14 could be? (6,2,3,4)
5. Transparent sheet with cool blue covers - father close to sleep, essentially (10)
6. It's requested to let guard drop (8,7)
7. The heart of dreadful opening appearance (6)
8. Christian possessing quiet place to stay rejected troublemaker (3,5)
9. Actress from finale of The Avengers snubbed broadcast (3,5)
10. Light exhibition is just OK (4)
11. Prize left lying around hotel unknown (6)
12. Partnership taking on bar skilled and without fault (15)

Down

1. Absurd metaphors formed for cats? (6,9)
2. They come from rude lips? (4,6,5)
3. Break into rudimentary accommodation after shunning society (4)
4. Magic letter once produced a kind of force (15)
5. A number made from two irrational numbers initially read in binary (8)
6. Combination that's a secret put into drink of the mountains (6)
7. This beaten to let deceit rest (3,8,4)
8. Go and quietly cry (4)
9. Collective place of learning oddly trendy (6)
10. Strike on deck leads to records with gaps (5,5)
11. Old driver's glee interrupted by a protest (10)
12. Encouragement for bird owner? (4,2,2)