Voiceover artist Clarke has hired the agency following an increase in media attention since November 2007.
Clarke recorded spoof tube announcements and was mis-quoted as saying she hated the tube. Follow up reports suggested she had been sacked by London Underground as a result.
The agency was awarded the account without a pitch.
Bottle PR senior PR consultant Carole Scott will head up the account. She said: 'We want to make sure Emma doesn't get pigeon-holed by a story which is now past its sell-by date.
We’ll then work with her to identify media opportunities that will highlight the issues she wants to campaign on, such as plain English and the need for internet royalties for voiceover artists.'