I'm sorry to jump into your thread with my own questions but your lists has given me a few, I hope you don't mind!
From what I understood you only have to send a letter of support from your spouse if they are not accompanying you to the UK, is that right? If so do most people include one anyway?
And is it really necessary to add both my old passport (maiden name) and my new one? I have two due to changing my name when I got married but technically it's not expired just no longer valid.
To the OP , your list is really helpful, no matter how many I see it's always comforting to see lists of the exact documents people are sending because I find some of it to be a bit unclear on the official site.