Thanks for your reply, Lee.
Yes, I did grow Kumato again and it did very well. Early on the flavour was OK, but sweet without enough acid balance. However, later in the season it was much better, with better acid balance. As usual it is one of my good standbys.
Varieties which did do well, outside, here were Red Siberian, Clear Pink Early, Vorlon, Grub's Mystery Green, Maya and Sion's Airdrie Classic and Yellow Scotland. Red Siberian especially retained its flavour very well when 'finished off' inside. They all produced very well, but especially Yellow Scotland which was laden with tomatoes. Unfortunately they didn't keep too well once picked! I don't know whether those varieties will give you any material to work with for the 'cold tolerance' project.
There is one hybrid which I shall always grow for its reliability, Late Blight tolerance, production and flavour is Fantasio. It is one I can rely on for outside in our climate.
One of the introductions I had from you, Lee, which I love and will always be included (for the greenhouse) is Maria Amazilitei's Giant Red. It is superb!
Gill
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