Morning all, it's raining! Glad for my seedling potatoes, but need to buy a bigger mac, it's like a tourniquet after my lockdown eating 
Yogi I would recommend putting your dog into kennels during the move. I had the advantage of a day's grace between completion and moving in. I completed on Thursday 11th, moved in on Friday 12th, and then had the whole weekend to clean the rental as I had paid until the 14th.
I put my dog into kennels on the Thursday afternoon, and collected him late Saturday afternoon, and am very thankful I did. I did bring him over to the bungalow to have a look around before I took him to kennels. I also set up the huge dog crate in the bathroom for my cat, and put a sticker on the door and tape across.
The next day, I got up at silly 'o' clock to take my cat over to the bungalow before the removal men arrived at the rental. They turned up at 9 am ish, and it took three hours of fast work to load both the rental cottage and the garage. I think we finished moving things into the bungalow by about 1 pm. I didn't have much furniture to dismantle, just two beds plus the legs had to come off the sofa and chair.
When they left I had a breather, then went back to the rental cottage and hoovered throughout, washed all the windowsills and skirting boards. I was exhausted by then and decided to shampoo the carpets the next day. I was very lucky to have the carpet shampooer until the Monday, and did the carpets on Saturday and Sunday, plus deep cleaning the kitchen and bathroom. I was upset I forgot to hoover the top of the radiators, was a bit shocked to see the big close up photo of the 'animal debris'!! They'd photographed the interior of absolutely everything, even the fridge freezer. Luckily landlord did return my full deposit.
I'm glad you've sorted out your conveyancing, I bought a book in the end to understand the flow of the process, very useful as I'd never bought on my own before. If you can, I'd clean all the windows and other jobs that will 'last' until completion in advance, I was on my knees by the end of my cleaning.
For your furniture I recommend Facebook local sale pages, I had great success and some lovely people came to buy my furniture - except the sofa rats!.
As for removals it's recommended you don't book them until you have exchanged, but my seller wanted to exchange/complete on the same day initially so I did get quotes in advance. I chose a company and asked them to pencil me in. Unbeknown to me my seller had actually moved out the day before, it would have been helpful to know, I got the keys at 10 am. It is worth taking out the 'late key' insurance in case your seller leaves your new purchase late.
I thought about the new owner's reactions after I posted last night, he is a Londoner like me. I bet he thought trades were cheaper in 'The North' and he'd get everything done for a song.