British voice over (female 5-10 yrs old, or sounds like)

We are looking for a young female with a childish, sincere and cute voice over. For our test we are mainly concerned with an approach that will convey our sayings clearly, warmly, innocently, sincerely, with smiles, believability and enthusiasm (as if talking to a close friend). A script with a few sayings will be sent to our final choice and needs to be said within a 10 second window of time. We will require several takes and at this time it is only 10 seconds long. This may develop into more work after the prototype is approved. We will need quality MP3 files sent to us and we reserve the right to use and own the final voice overs files. A sample voice over is required for us to make a final selection.