I have the CVNE Gran Reserva 2014. Had the first of them this year. Will try to delay opening the others...
Majestic sell a GR 2009 I think, not CVNE, only about £10 it's sensational value for money.
I once bought a case of ridiculously priced GS from 1967 or something from them for about £45 about 20 years ago, which was excellent, apparently someone had discovered a vat in some warehouse somewhere (Holland I think) and Majestic bought the lot and had it bottled.