This Sungold tomato was a volunteer. Let me explain - I had mulched my tomato hedge with a thick layer of compost, when a few weeks later (back in May) a little bunch of tomato seedlings were poking their way out of the soil. A sungold tomato in the compost from last year had germinated about 30 seedlings in close proximity. I admired their will to live.
Potted up a few, and here is one. So glad I will have some seed for next year, they are fantastic and very very sweet.