POSSIBLE ALTERNATIVE SPELLINGS.
RE: Chris's query.
The clue answer for 42 down has alternative spellings.
The original clue answer spelling which is 6 letters, in which Paul compiled the clue is in Chambers 11th Edition, and has one alternative spelling entered with it of 7 letters.
The two other alternative spellings that Chris has found have slight deviations with the vowels containd in the answer.
As this clue is not an anagram, the final spelling is not affected by the wordplay and has no serious bearing on its outcome. also, the alternative spellings are only affected where the grid squares are unchecked, so it does not interfere with the crossing clues.
Hope that makes sense.