Considering London is the capital, finding just one wedding venue that is considered the best in London is going to be near impossible. Every couple is different and has different taste, styles, size requirements and budgets for their wedding.
The best wedding venue in London for one couple could be the iconic shard building whereas the next couple might not even consider it. Therefore, finding something that embellished your individual personality is crucial.
That being said, what you can be sure of is that there are an abundance of unbelievable wedding venues in London so picking the right one for you wont be an issue.