Welcome, Dan - glad to see more folk from Scotland. (It's sometimes frustrating reading about all those southerners and what they can grow that we could never even dream of!).
Just had a look at your website; very enjoyable. You were right, the weather in May was miserable. We keep weather data on a daily basis and can prove it! As far as I remember without getting the books out, the soil temperature was 2 degree less than the usual average for May, and the rain was 40% more. No growing weather.
Oh, a tip for the lawnmowing which doesn't seem to be your favourite job: I hate it, too. I "employ" two goats to do it for me

. Leaves me with a bit of a fencing job... And unfortunately they are very good at pruning, not always in the right places.
Hope you'll enjoy this forum as much as I do, and looking forward to the many useful hints you are bound to be able to give us!
Ina