Between Maris Otter and Golden Promise, yes, there are. Believe it or not, sometimes those two malts become intertwined and used as synonyms. Obviously they are different, but I'm just saying. Standard British Pale is typically the Pearl strain of Barley, like what Munton's uses.
Fuller's Vintage Ale (malt does change year to year)
Stroud's Vintage Ale
Timothy Taylor Landlord
This is a small list for sure, but Maris Otter and Golden Promise are not always available to brewers, believe it or not. That is why they are so special. Special and tasty!