Watch Maisie Williams mock celebrity ads.

"Let’s face the stark reality," implores 'Game Of Thrones' actress Maisie Williams in a hilarious new campaign video for Three UK, which mocks the more usual/typical celebrity endorsement ads.

"Blemished coverage impacting your social life? Global TV star Maisie Williams knows how you feel. She was all all alone, unsuccessful and totally disconnected….until she discovered a unique phonecare solution...

The news is out! There's a simple way to easily remove indoor blackspots from your life – 4G Super-Voice from Three UK. Created by our leading phone-atologists, 4G Super-Voice’s unique science-y stuff with wall going-through technology means you’ll enjoy a level of connection indoors that fights blackspots at their root."

Watch the ad below...