The initial Gecko commercial ("Stop Calling") was voiced by Kelsey Grammer (of "Cheers" and "Frasier" fame). The follow-on commercials used Dave Kelly, at first imitating Grammer, but eventually drifting away from that distinctive voice.

The voice for this new round of Gecko ads seems very similar to in accent and tone to the voice of Mackenzie Crook, who played 'Gareth Keenan' on the original, BBC version of "The Office."