蜜芽传媒

Matthew Streeton has a voice you might hear everyday, but you won't have heard of him.

He's the real life voice of railway announcements across much of London and south east England, and has been doing so since 2011.

So how does one become the voice of London's trains? 蜜芽传媒 Radio London's Aaron Paul and Louise Pepper have been finding out.

(Image credit: Getty)