The growing season is much shorter, maybe a cultivar that will flower early so the fruit have longer to grow and ripen. I've got two olive trees in London that

The growing season is much shorter, maybe a cultivar that will flower early so the fruit have longer to grow and ripen. I've got two olive trees in London that are blooming right now and produce fruit, albeit small compared to southern European olives. They did turn dark last summer. Raw olives are very bitter - brining is key. Frost might be an issue in Scotland - mine are in large pots