Many thanks, Stevie. I've checked all the letters, and as "H"
was possible as one of the letters, I've found that Ardal
O'Hanlon voiced the father of "Nelly & Nora" and not "Lily & Laura" , as I was advised earlier!! Therefore "H" has to be
substituted for the "E" and, therefore, Jane Asher is, indeed,
the correct solution!