Robert "Rob" Rackstraw (born 31 October 1965 in Sunderland) is a British voice actor. He is perhaps best known for his various voices in the television series Bob the Builder, mainly the scarecrow Spud. He has an extensive voice over career over 15 years long and is considered to be one of the UK's leading male voice actors. He also played the main villain Pew in The Legends of Treasure Island, and Captain Campion in Watership Down.
He also wrote episodes of Avenger Penguins and Fantomcat.
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The setting of this show is Taxitown, where the eponymous Big Garage is. The four taxi cabs Names Are, London, Yorky, Zigzag, and Mimi, who are always under the watchful eye of Pump, a gas pump who serves as their mentor.