I think I'll have to start picking a couple of times a day too then. I've got a net so the birds can't get to them, but I just can't think how to stop the woodlice. My strawberry patch has rather spread itself over the last couple of years so that it's now about 3mx4m, so I must be losing several pounds of strawberries to the damn things.
There's a list of predators here. I've definitely seen those spiders in my garden, and my hedgehog has returned judging by the amount of poo I've seen recently. Have you got a pond or boggy patch to attract frogs?
We've got a large pond & there are definitely frogs in it. I don't think I've seen that spider around though, but it says it's common in the south of England & I'm in north Derbyshire.
I'm finding the timing of these strawberries odd though. We had quite a late start (hell, we had snow on the ground at the beginning of May!), but strawberries are just starting to ripen now. I don't remember ever being able to eat my own strawberries during Wimbledon before, they're usually a couple of weeks after it.