Mainly Scottish ones..... Finally limped across the line last night, just in time for the next one. Thanks to all for the hints, only a few of which I needed, and especially Brendan for the way in via the U answer. My last clue was solved by reverse engineering from 1 across, so a quick finish after an overdue PDM. A bit of confusion over the shading, as my 'arrow' doesn't have any pointy bits, but I've never been very artistic.
Thanks again, and in advance to tatters for delivering the puzzles early.