Times Cryptic Jumbo 1465

[NeilMunro]

Very grateful for all help with these clues please.
19dn: “Rogues succeeded with much (8).”
28ac: “Drive away unauthorised pair of canvassers at the front (4).”
29ac: “Kept in hand men’s prize at festival (5,3).”
48dn: “Writes off to a dictator, the king (6).”
50dn: “Film star in fur coat putting king in his place in Ireland? (5).”

[Captain2]

50 Tar-k-a

[Captain2]

48 Wrecks - sounds like REX (king)

[Mamyalynne]

50 Tarka

K in Tara

https://en.wikipedia.org/wiki/Hill_of_Tara

[Jackdaw33]

50 Tarka

[scorpiojo]

19d Scum bags

[Captain2]

29 Palm-e D'or

[Mamyalynne]

29 Palme D'Or

[Lie-in King]

19d Scumbags - 's(ucceeded) cum (with) bags (much)'
28a Two-c(anvassers)
29a Palme d'Or - 'palmed' + 'o(ther) r(anks)' (men)
48d Wrecks - "Rex", to a dictator; speaker
50d Tarka - 'k(ing)' (in) 'Tara' (Irish palace)

[Captain2]

28 Two-c

[Jackdaw33]

28 TWOC

[NeilMunro]

Many thanks all!!!