Sunday Telegraph General Knowledge

[tabbycat09]

Please can anyone help

9 across Gas used as an anaesthetic in dentistry N?Y?O?? O????
10 across Software that allows users to freely create and edite ?I?I
7 down Port on Atlantic coast in Galicia, north-west Spain ???O
8 down One of the Shetland islands south west of Unst ???L
24 across Underground station between Dagenham east and Hornchurch E?? P?R?
30 across Place of supernatural and frighteningly unpredicatble events
T??????? ???E
27 down small wading bird
22 down Of visual imagery of almostphotographic accuracy EI?E???
25 down __Van Dyke, US male vocalist with hit Walk on By 1962 ?E???
That's it folks

thanks in advance

[Captain2]

9a Nitrous Oxide

[Count-A-Strong]

Nitrous Oxide

[Captain2]

24a Elm Park

[Lie-in King]

9a Nitrous oxide
10a Wiki
7d Vigo
8d Yell
24a Elm Park
30a Twilight zone
27d Rail
22d Eidetic
25d Leroy

[Captain2]

30a Twilight Zone (answered before)

[Psybbo]

25d LEROY

[Brewmaster]

If you need help with so many clues you don't deserve to win any prize. Most of these answers could be found with a bit of effort but you are obviously too lazy.