I know this was answered well over an hour ago but I doubt aliens is the answer, the 'e' doesn't fit as the clue across is asking what age was Richard Adams (author of Watership Down in 2000) so he was eighty
Hello my friends, my mistake I spelt 19a wrong PermanEnt so Exiles is correct as Sandy has answered.
Thank you all, and Sandy am having a cuppa in the Whig before heading off for a few days.
Hope by posting this crossword across the border I just might have a chance of winning.
Have a lovely weekend, HAPPY EASTER