Hi, and welcome...

I don't think that these guys have the rothmans sticker kit but for sure you will find a wide variety of stickers kits in the folowing link...

http://www.carpimoto.com/Channel.aspx?Chan=3&Mode=0&Evidence=1&Page=1&BoxTop=1&Lang=EN&brand=&bike=&Firm=0&keyword=

Cheers
Michael