looks as though it/the pairing spent some time on the music for pleasure or classics for pleasure label - perhaps both - until the latter was closed down by emi, and (some of) its catalogue reissued more expensively on hmv/emi's "proper" classical labels.
(mfp was originally a collaboration set up by paul hamlyn, he of the incredibly cheaply-produced-but-brightly-colour-covered cookbooks fame, digging his way through hmv/emi historical, ignored (and frequently mono) recordings (and anything else he could lay his hands on cheaply enough). it launched into releasing original recordings of the classical cornucopia by established orchestras, with the costs covered by cigarette company sponsorship - which recordings are not to be sneezed at - and continued this so successfully that the gramophone record company/emi manglement, who'd by then bought out paul hamlyn's 50% share of mfp, felt these were cutting into its mid-price, as well as its full-price classical labels' sales...