Если именно ожидали, то:
I expected to see a lot in London. I imagined beautiful 2 floor buses everywhere at London streets. I expected to see beautiful streets filled with shops.I also imagined how i will see Big Ben and lots of tourists near it. I expected a lot of parks in London. I expected to see a big and beautiful city. I did expect to see good weather there. That's how many things i expected to see in London.