Herald

[dave1948]

17 Girl of one particular apostle (7)
???L???

18d Movement of effluent leaves the south, heading now north (3,3)
??W ???

5d No right to be used in promenade's lettering (4)
???T

14d Leader West needs to sort out (7)
???S???

[chelle7272]

5 f(r)ont

[Captain2]

5d F(r)ont

[cupid04]

17 chalice?

[chelle7272]

new age (n replaces s in sewage)

[dave1948]

Thank you all

17a is now
???L?N?

so that rules out the suggested chalice

[Captain2]

Pauline

[dave1948]

Thank you Captain 2

[Captain2]

Any more letters for 14d Dave?

[dave1948]

14d the answer is maestro
Anagram of mae (west) and sort.

Last one
19d Pen or sword needed when on guard (5)
?E?C?
My thought is fence but can anyone explain why ?

[Captain2]

To pen (in) = Fence = (to) sword(fight)

[frugalfred]

Pen in = fence in;

[dave1948]

Thank you Captain 2 for all your help. Much appreciated and finished !

[dave1948]

Thank you too Frugal Fred