Saga

[Daij]

1a Madam fed up, reportedly (4)
B?W?
7d Invalid, not surprisingly, likes lettuce for starters (4)
N?L? NULL?
27a Vehicles to carry instruments failing to start (4)
???S
19a Fever expected to grip almost 43% of England (6)
?E???? DENGUE?
24a Boxer once touring west of Ireland, round Mayo, in part? (5)
??O??
26a Make untidy female in club start to listen (8)
??S?????

Thanks in advance

[aelmpvw]

1a bawd

[Tilly2]

1a bawd

[aelmpvw]

26a dishevel

[fiction-factory]

yes to dengue- due + 3/7ths (circa 43 % ) of ENGland

[aelmpvw]

24a aioli

[JF85]

7d would 'unsurprisingly' make more sense?

[elliemay1]

27 cars?

[fiction-factory]

agreed- clue is probably ... unsurprisingly.... so intial letters give NULL

[Daij]

Yes, indeed, it is Unsurprisingly - my error.
Have a few more;
27a Vehicles to carry instruments failing to start (4)
???S
20d For audience, could be chaps making appearance (5)
G?i?E GUISE?
18d Welsh, for example, Frenchman's acquired (6)

[Daij]

?E?D?E

[elliemay1]

20 yes, guise, sounds like guys

[aelmpvw]

18d renege

[Polly37]

27 across UTES. Ute is a vehicle knock fl off flutes

[Daij]

Thanks very much to everyone who helped

[whitehill]

I think 27ac is (l) utes