I LOVE visiting London – so I know that the city can be expensive. But it doesn’t have to be! This list of free (or at least very cheap) things to do in London is the key to not going broke while making the most of your visit. From historic museums and iconic sights to famous filming locations and amazing markets, this guide has a ton of options for your itinerary. For the perfect trip, combine activities on this list with a few pricier ones – for the ultimate list of the 17 best things to do in London, check out my blog post here. Free Museums & Galleries 1.…