SOLUTION 685:

ACROSS 5 Dross, 8 Hogwarts, 9 Index, 10 Tortilla, 11 Moths, 14 Fez, 16 Chi Chi, 17 España, 18 Gin, 20 Smell, 24 Steerage, 25 Bisto, 26 Istanbul, 29 André.

DOWN 1 White, 2 Agora, 3 Fagin, 4 Attlee, 6 Randolph, 7 Stephens, 12 Champion, 13 Sculptor, 14 Fig, 15 Zen, 19 Irtysh, 21 Texas, 22 Lambs, 23 Hello.