I see a lot of advices on taking it easy, but are your belongings packed? Unless you're hiring a moving company to do all the packing, you better get started as soon as possible.
As far as last minute tips go, I'd suggest to write down all you meter reading. Also leave a list of numbers of all your utility companies. The new tenants will appreciate it. I read the last moving tip on this checklist. I'm moving to Fulham soon and I'll definitely leave such a list at my, soon to be, old house.
Did you update your social media status? I think that is also a good idea