Thanks very much Djawfulc : I thought 34dn might be that but the "i" at the end of 37 across seems impossible ; and I don't see how the "small vehicle fits between "can t.........oast" and makes sense. I'll keep trying.
Yes, I know what it is ("single-chairer" was my clumsy paraphrase), but I don't see how it fits between "t" and "oast" as the third "e" should be an "a", surely ; and 24 down has to end in "e".
Is the implication that the third "e" should be capitalized and stand for "English"? [The "last" in the clue seems wrong as well, but I'll try to ignore that].