Yes, I've only had my allotment for 15 years but it's easily been the worst, by an order of magnitude.
I start the vast majority of my plants in module trays of 60 and I so I have far too many plants when it comes to actually planting them out. But even so, out of 40 brassicas I planted in early April I got 3 cabbages from. My entire June planting of lettuce and endives got eaten twice, that's over 80 plants with nothing to show for it. For my squash I planted over 20 plants, just for them to be eaten over and over, I have four plants remaining. The courgettes have produced two from over eight plants planted and eaten by slugs, only three survive but it's too cold for them to produce. My redcurrants produced nothing for some reason, same with the plum which hasn't produced anything for two years now.
Some things have worked, for example I've never had so many weeds as I have this year
It's extraordinary how they grow so well, but perhaps understandable as it simply hasn't been dry enough to hoe for 14 months now.
The potatoes did well, blueberries did well, for some reason outside tomatoes have done well!!! Leeks look good, later plantings of brassicas have loved the wet cool weather so I should have loads of sprouts and PSB. Beetroot has done well. Still potential for the celeriac to do good as well. So it's not all doom and gloom. I should probably face charges in the Hague for the number of slugs I've killed but there are mitigating circumstances
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