View both new spots and credits here
The ad, which plugs the train company's revamped London to Scotland route, sees Branson covered in tattoos, and sporting greasy hair and blacked-out teeth.
Filming took place at Glasgow Central station, and focuses on a businessman rushing to get to a very important meeting.
The spot gets shown for the first time tonight during Channel 4's Embarrassing Bodies programme, which starts at 8pm.