Thanks guys for your replies. The Lady in Gatwick told me that is a new requirement, related to EASA, but I don't see why other authorities don't have this problem.
It's good to know Mopas that at least something like that exists. I am sure that if I would have done the LVO training during my type rating, now I'd have something like you in my remarks. The thing is, my LVO was schedule to be done with the operator, so in Gatwick they didn't add this expensive remark.
De Facto, I'd really appreciate if you had the chance to find out more about this. Looking forward to hearing from you. Thanks again.