I don't think VS will mind - it should be ok.
By the way, you do know that VS pay less than BMI? Its a great airline, but alot of people who work as crew complain its hard making ends meet. But, if your looking to do cabin crew short-term, then go for it - VS will be great! If you want to make a career, apply BA Heathrow. Probably not as fun as VS, but the pay is good and good career progression!
BA are recruiting as well.
http://www.britishairwaysjobs.com