25a is one of the clues where the answer has to be changed before entry into the grid. So, HEL is not in the answer - which is 6 letters, whereas the entry is only 5 letters.
Thanks Rollo, that is how I had worked it out but nice to have it confirmed.
BigDave 44, Inquisitor is not a straight crossword, the themes and wordplay differ weekly,and unless you actually have the grid, theme and extensive guidance in front of you, it is impossible to deduce. In this case wordplay in each clue yielded an extra letter in clue order to spell out a reference. This crossword is in the Saturday Independent's magazine.