Conveniently a lot of the pillars on Mull are round, so they're ruled out. The round bit in the middle is missing, which helps. I also think the background looks like Ardnamurchan, so started with that side of Mull.
Based on the above, I initially thought it was: TP4717 - Meall An Inbhire -
http://trigpointing.uk/trig/4717
Then I looked at the paint splodges, and they didn't seem to match.
Then I just googled the name of the photographer and found this:
http://www.martynbennett.com/A009.html
Mystery solved, though I still can't reconcile the paint splodges.