Thanks Cookie, am doing a lot better. Just tired now I think.
Well today I tried -
Warming the flour
Kneading for twice as long in the TMX
Scoring the top before the second rise
Doing the full second rise outside of the oven
Preheating the oven to a very hot temperature and then turning down when I'd put the loaf in
Putting a tray of ice cubes in with the oven while the loaf was baking.
Apart from one major problem, it was the best loaf I've ever made. The bread rose perfectly, browned evenly and was super soft and delicious. Unfortunately it was completely stuck in the tin! I couldn't get it out. I ended up having to pull it out in chunks. It nearly broke my heart because it looked so perfect. So near but yet so far. Sigh.
The dough did seem stickier than normal - it didn't stick to my hands but did stick a bit more to the TMX blades. Maybe it needed a bit more flour?
I will not be defeated!