Dt 28,713

[catswhiskas]

14d, Command having entered 9 perhaps (10)
18a, Wife fighting to secure high-class sale (5+7)
19d, Get attached to film publicity brothers brought up (6)
27a, In Lib-Dem leader I will replace ace making comeback that can't be beaten (10)

Thank you

[Mamyalynne]

19 Adsorb

Ad + Bros, back

[bookbinder]

27a invincible

[Mamyalynne]

19 Dutch (wife) A u ction

[dannyk13]

Injunction
Dutch auction
Adsorb
Invincible

[Lie-in King]

14d Injunction (ref 9a "Cloverleaf"; a junction)
18a Dutch auction - 'dutch' (wife) + 'action' (to secure) 'u(pper-class)'
19d Adsorb - 'ad' + 'bros' (up)
27a Invincible - 'I' for 'ace' (back, in) 'in VincE CAble'

[jourdain2]

14d injunction
18a dutch auction
27a invincible
19d adsorb (ad is opposite to ab)

[catswhiskas]

Thank you all very much.