this is definitely the best way to see a glimpse of the city and decide what areas you want to spend the rest of the trip exploring (no need to plan any sort of itinerary. just do this at the beginning of the trip. my mom and i didn't have a single thing planned when we landed in london and we liked it that way).
most of these pictures were taken while riding on the top of the double decker bus with my hyper baby in my lap (she loved it), so some of them are a bit blurry, but here is a glimpse of what we saw and what you would see if you spent the day in london!
the only downside of this day was when, after getting off and exploring for most of the day, we finally decided we were ready to head back to our hotel. we got back on the bus only to realize the stop near our hotel would take a good 2 hours to get to (buses move slowly, stop often and take the longest route imaginable-we actually weren't even very far). after driving around in circles, insisting the bus driver was messing with us, listening to the same commentary a billion times and having to nurse in public ON A TOUR BUS we were laughing so hard we were crying by the time we finally made it to our stop and stepped off of that bus into freedom. word to the wise, take a cab home.