Radio Times 1

[Kogvos]

5d. Lion, say, given fruit within courtyard (is it QUADRUPED)
6d. Making progress with a sound, involving third vehicle (is it ADVANCING)
12a. Liberal doctrine of ITN series (is it BROAD CHURCH)
17d. Element boron is on opening lacking oxygen (is it BISMUTH)

Thanks

[cashier]

5 Yes Drupe in quad

[Captain2]

17 Yes, Boron = B + IS + M(o)UTH

[aelmpvw]

5d qua(drupe)d

[Lie-in King]

5d Yes - 'drupe' (fruit, in) 'quad'
6d Yes - 'van C' (3rd vehicle, in) 'a ding'
12a Yes - double definition
17d Yes - 'B(oron) is' + 'm(o)uth' (lacking 'O[xygen]')

[aelmpvw]

12a broad = liberal
church = doctrine

[Captain2]

a sound = A DING
third = C
vehicle = VAN

[dannyk13]

5d. Drupe(fruit) inside quad(courtyard)
6d.V(ehicle) inside a dancing
17d.B(oron) + is + m(o)uth

[Kogvos]

Thank you all, all finished and got the wordfinder. Happy new year everyone

[Captain2]

... and all the best to you and yours too, Kogvos