I have found a solution - just posting in case anyone else finds the same difficulty: 1. Outside of Inkscape, type a hashtag (alt 3) 2. Highlight and copy the hashtag (cmd-c) 3. Go back into inkscape and open a text box 4. Paste the hashtag (either via Edit, then paste or ctrl-V, not cmd-v) I think ...

The former- no result at all.

Hi @v1nce, thanks for this, but this is precisely the issue - alt 3 is the usual way to get hash sign but it does not work on inkscape, shift 3 brings up £, not #.
Thanks for the reply but this does not work, I am afraid...

Hi, I have updated Inkscape and have found the update will not allow me to type a hash sign (#) anymore - I am on a UK mac keyboard which does not include a hash sign - does anyone have any tips or ideas on how to fix this?
Thanks,
Sam