1 Canine cartoon keeper of law and order (6,4)
6 Martin ---, British author (4)
10 Any of numerous trees or shrubs of the genus Acer bearing winged seeds in pairs (5)
11 Large voracious dark-coloured long-necked seabird with a distensible pouch for holding fish (9)
12 Heavenly place, peaceful and beautiful, where those who are favoured by the gods can go when they die (7)
13 Ugandan city on Lake Victoria (7)
14 Lane down which a bowling ball is rolled toward pins (7,5)
18 Disease of cloven-footed animals, characterized by vesicular eruption (4,3,5)
21 Benjamin ---, English composer of the opera Peter Grimes (7)
23 Two continents in one (7)
24 French novelist and social reformer, he wrote J'accuse about the Dreyfus affair (5,4)
25 Town in Northern France famed with its English Catholic links (5)
26 German city and canal (4)
27 Robin Hood and William Tell, perhaps? (4,6)

1 --- and Son, Charles Dickens' novel (6)
2 Cartoon sailor and spinach eater (6)
3 Cartoon feline with music by Henry Mancini (3,4,7)
4 Killed in large numbers - one tenth perhaps? (9)
5 Shane ---, Australian bowler (5)
7 A faggot (8)
8 London firm of fine art auctioneers founded in 1744 (8)
9 The card game for Omar Sharif (8,6)
15 Could cost lives in a war? (5,4)
16 Ball in cricket which deviates towards the leg side (3-5)
17 Murder (8)
19 Portuguese money (6)
20 Hydrophobia (6)
22 Joshua ---, nationalist leader of Zimbabwe, imprisoned 1964 -1974 (5)