Cryptic crossword
ACROSS
1 Sat at fourteen assemblies in the wild (5,2,6)
10 Give another chance at post to cut down score (9)
11 Chap leaves civic dignitary in tree (5)
12 Mug up Latin for wedding (7)
13 Shine, returning help in class (7)
14 Dash along what's called stinking wetland (6)
16 Dived headfirst into muddy deep end and was left hanging (8)
18 Mathematical function provides large return on interest (8)
20 Irish police give back paper to Welshman ... (6)
23 ... but fire police officer's maid (7)
24 Temporary workers on the terraces? (7)
26 Become thin, we hear, in the middle (5)
27 May a lease be offered to painter? (9)
28 Perk that could be hiding one's frowns (6,7)
DOWN
2 Walk over to coin exchange (5)
3 Joint helps works to go with the flow (7)
4 Roles I act out in windows (6)
5 Lawyers are Cancer, perhaps (8)
6 Walk like a duck on last night? Rubbish! (7)
7 Socialist gave out in the act (9)
8 Les fentres (6,7)
9 Unrestrained confession results in no charge (4,9)
15 Pastries I make (9)
17 Bloodbath in mountain land (8)
19 Information containing record of glow (7)
21 Forgive sailors' love tangles (7)
22 Caught in historic village with candlestick (6)
25 Twist a tail in mountain range (5)