However, I think I've found it! Over at The Road to Loving My Thermomix, Peta has developed a great recipe and has loads of tips on bread making. I learned that I have had my oven way too hot for this sort of bread. I cook at 180C now and have been making some lovely loaves and rolls using her recipe.
Rather than copy it, I'll pop a link here so you can read all the tricks of bread making yourself.
Here's one of my lovely loaves with some rolls made from the dough. This is double her normal recipe for rolls, that is, it uses 750g flour. This particular loaf has 620g strong white flour, 80g wholemeal flour and 50g white spelt flour. It made a large loaf plus 6 rolls. I leave my dough to rise until it's tripled, rather than doubled. My bread tin measures 28 x 14 wide x 12cm high. The rolls were baked in a 20cm tin.
Do try this fabulous recipe. I'd love to know how you go with it.