It wasn't apple when he recorded. 
British voice of Siri only found out about it when he heard himself on TV
You probably need no introduction to Siri, the voice-based personal assistant Apple introduced in the iPhone 4S, but how about the human behind that voice? In the UK, Siri is personified by a slightly posh male voice, which we've now discovered belongs to an experienced voiceover artist by the name of Jon Briggs. The thing is, he only recently uncovered that fact himself — by hearing his voice on the latest iPhone ads on TV.
Some six years ago, says Jon, he recorded a set of 5,000 sentences for Scansoft, a company that then merged with Nuance Communications, who in turn provides the voice recognition engine inside Siri. Thus, his prior work has now found a rather unexpected (and massive) new stage to demonstrate his talents to the...