Sounds to me like this is the same thing of other English malster's "Pale Ale" malt. It's not Maris Otter, but it may have Maris Otter. It's likely a blend of various cultivars, or whichever happened to be the best that year. Unless you've got a super-palate, are trying things side by side, or you're using it in a beer you brew regularly, you probably wouldn't notice the difference.
Up Next: Best Bitter, English IPA, Spiced Winter Warmer, Brett. C. Old Ale
Primary: English Summer Ale, Coniston Bluebird Bitter Clone v1.5
Secondary: Sour Stout, Wild Bitter
Bottled: Sticke Altbier, Doppelsticke Altbier, Weizenbock, Berliner Weisse, Spruce Brown Ale, Arrogant Bastard Clone
Bottled for the long haul: Brett B. Tripel, Quadrupel, Tripel, Brett C. Oaked English Barleywine, Lamebic