Leo Blair? - Tony Blair is an old Fettesian (a former pupil of Fettes College, a private school in Edinburgh, Scotland.) Not sure how the rest of the clue fits in though.
Many thanks to you both ,I thought it was that but I could not confirm it. I made mistake on my posting,some of it the letters were missing,8d Borders hill that horror actor Christopher might write with(3--3) (L?e---?e?) 17ac English word for Scots crying-but not weeping.(6) (n??ing) Please help if you can.