If there's one thing that London needs it's an in'n'out, do it all, pop-in salon. Blow Ltd promises to be just that so I went along to see what's it's like and I've been dying to tell you about it ever since… Prepare for a rave. Short for time? Got a big event coming up? Need some emergency beauty help? This is where Blow Ltd comes in. The concept is pretty simple. Get your hair, nails or makeup done or even...