Ros Asquith has 3 audiobooks on Listento.it, narrated by 2 narrators. The most-rated is Trixie Tempest and the Amazing Talking Dog.

The Green Hand of Doom will get you all! Someone is playing ghostly tricks on the staff and pupils of St Aubergine's School. But it isn't Trixie Tempest, oh no!She is far too busy Saving the Planet, being Nice to Nits and practising her solo for the Save the World with a Song Concert. So who can it be? Not a real ghost, surely? Oh no-o-o-o-o-o-o-o-o-o-o-o-o-o!
©2003 Ros Asquith (P)2014 Audible, Inc.

Flowkwee is on a mission – he has to disguise himself as a schoolboy and spy on young earthlings, in order to help his father with his research. Here are his letters to his best friend, describing the strange earthlings who have only one head, two peepers, and no aerials, lights, whirlers or even winkers! And he discovers the fool-proof way to catch earthlings is to tell them to follow a sign saying ‘ice cream!’
©2010 Ros Asquith (P)2011 Oakhill Publishing Ltd

Introducing Trixie Tempest, the tweenage tearaway with a heart of gold and a brain full of fireworks! Trixie has more on her mind than boy bands and butterfly tattoos - she's out to Save the World. But first she needs cash, and fast, before Mum and Dad find out she's lost her precious trumpet. Because how can she play a solo in the Save the World with a Song concert without it? Enter Harpo, her amazing, talking, singing, yap-artist dog. Is this hound-with-a-sound too good to be true? Listen and believe!
©2003 Ros Asquith (P)2014 Audible, Inc.