mantovani retired in 1975, taking the parts for his orchestral arrangements with him (he died in 1980). i understand that quite a lot of unauthorised material has appeared on cd under his name since - including both genuine recordings deemed in his lifetime not of a quality suitable for public commercial release, for whatever reason - but also recordings with which he was not involved at all.
n.b. nor this cd, nor any of the tracks, is credited to mantovani and his orchestra.
i do not know whether this compilation is of genuine recordings by mantovani and his orchestra. recordings originally released by decca records, decca house, 9 albert embankment, london se1 (and on recordings licenced from decca) on decca & london record label lps, eps, singles & cassettes in his lifetime, and transfers to cd made by decca (and by polygram since it purchased decca, and any by universal since it purchased polygram) from these decca recordings are genuine: i do not know if any other recordings are, and would appreciate authoritative advice.