A bit of random Googling and I just stumbled upon this guy's website... Steven Thomas.
Turns out he designed a number of the British American Tobacco related liveries including the 555 Subaru, the final Tyrrell and some of the BAR cars. Here are some of his initial proposals for the 1998 BAR test car.

I particularly like the 'BAR Belle' and 'BAR Mobile'
It's interesting to read some of his insights about the designs that didn't make it, his views on his perceived similarities between the original Lucky Strike livery and the 2002 onwards Toyota livery etc... Also, up to now I'd not spotted the subtle '5' in the non tobacco version of the 555 logo.
Edited by grandmastashi, 31 March 2014 - 19:39.