Help please if anyone is out there! 12a: in Durban, bits of bramble from sides of ruin blocking entrances {6} there will be one letter not required for the answer, but I have ?IORN? Which must be wrong perhaps?
Completed the grid and changed the two answers, Problem is, I don't understand what the extra letters from the across clues are supposed to be telling me - which worries me. I also can't parse 20a, unless "S" means steed.
I agree Malone, it just seemed an unnecessary complication. The two names and the preamble provide all the information you need. BTW it is 30a that I can't parse, 20a was a typo.