If your intention is to recreate it, Sinclair Light Script by Red-Rooster (or Sinclair Medium Script) could be a good starting point for most letters.

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I found it using Find my Font - http://www.findmyfont.com

For those who want to know who is behind this lettering, this is Laura Meseguer's work.
And for those, like me, who don't have such skills and talent for lettering, here is a list of alternatives.

A better alternative might be to hire Meseguer! Doesn't hurt to ask for a quote, and you'd end up with something unique.

hhp