Battle of the Birthdays As twins Sarah and James can never agree on what kind of birthday party to have, Bronwyn has decided that this year they will have two parties. James' will be a science party and Sarah's will be a football party. Details Casts Title Battle of the Birthdays Genres Kids Animation Comedy Family Release Date 2014-04-12 Episode Runtime 00 Hours 10 Minutes Season Number 9 Episode Number 2 Production Companies Siriol Productions, HiT Entertainment David Carling Station Officer Steele /? Su Douglas Dilys / Mandy / Helen / ? Tegwen Tucker Penny / Sarah / Bronwyn ? Jo Wyatt Hannah / Lizzie (voice) Steven Kynman Sam / Elvis / Norman / D? Ifan Huw Dafydd Gareth (voice) Nigel Whitmey Moose (voice) Alex Lowe Ben / Joe (voice) John Hasler James (voice)