I Cryptic

[creamegg]

12a politician avoiding disgruntled sound turning to cheer
h?r???

6d refuse to consider how not to annoy gaffe prone seed 5,3 2,5
l?u?? ?u? ?? ?????

16a generous about various fuels and power for stable 4,10
s?l? s???o?t???

20a additional food point brought back 6,2
??c?e? ??

25a feel sore transport vehicles are withdrawn
s????

26a US police heading of con
h???

17d cut flower feature seen around one cut flower
????n??

21d event in theatre cut by almost half for event in different theatre
??e??

[Neveracrossword]

6 Laugh Out Of Court, refuse to consider. (The seed = tennis player)

[Neveracrossword]

25 Smart, feel sore - Trams reversed.

[Calibax]

12 Hurrah - Harru(MP)h reversed

[Neveracrossword]

26 Heat, slang US for cops, take the C away from Cheat, con.

[Flonska]

16a Self Supporting

[Flonska]

17d Petunia

[Flonska]

21d Opera

[Flonska]

21d Opera(tion)

[creamegg]

thanks x

[herbage]

Could someone please parse 16a?

[Neveracrossword]

Sporting = generous +anagram of 'fuels' and 'p', power.

[Neveracrossword]

… Sorry, I should have said that the anagram goes inside the Sporting.

[donny48]

16 anagram of fuels + sporting(generous) + p(power)

[herbage]

Could someone please parse 16a? Thanks both

[Neveracrossword]

Donny, I don't think the Sporting gets anagrammed, it contains the rest.

[Toorak]

Anagram of fuels + p(ower) inside sporting (generous)

[donny48]

I took that as read but expressed it clumsily.

[Toorak]

S elfsu p porting

[Neveracrossword]

Thanks, Donny - the 'sporting' in the middle of the two anagrammed bits confused me!