The look and characters brought to life on Peter Jackson's 'Mortal Engines' Polly & Grant 13/12/2018 The actors and actresses that star in 'Mortal Engines' are not your typical Hollywood stars, and it was a deliberate choice by filmmakers Peter Jackson and director Christian Rivers. Chatting to Polly, hear why the leading stars were picked and what they brought to the characters. WATCH: The "huge" project of 'Mortal Engines' WATCH: How Peter Jackson and Christian Rivers crafted the world of 'Mortal Engines' Discover More Stories Polly & Grant Polly's open letter to her ex-husband's wife Polly read out a letter to Grant's "better wife" Lisa, with all the best things Lisa has provided during this weird time in our lives. Let's all be li Polly & Grant Polly & Grant surprise caring grandparents for Break & Enter Christmas Sue and Sam do their best taking care of their three grandchildren, and their community wants to show that they have their backs. Polly & Grant Polly & Grant confess the weirdest things they did as kids Why we thought these were okay as kids is unbelievable!