Take a look at my Little Gems.
We had one of these in our salad tonight, with Waitrose cucumber and Lidl sun-dried tomatoes. Maybe we could have had our own cucumber, but I never got round to buying the seeds. And the tomatoes are currently only about six inches high, just out of the picture.
You should keep your Little Gems well watered, I've been advised, or they will bolt. We've got very chalky, well-drained soil, and I don't think I've done the watering well enough or often enough. I don't like the look of the yellow hose snaking across my lovely green lawn. And I'm not carting watering cans all the way up to the vegetable plot. The plants must take their chances, like the rest of us, is what I say.