10. King Arthur: Legend Of The Sword
Guy Ritchie has been behind some of Britain's best films, and although in recent years his credibility has taken a number of severe blows, his name still carries a fair bit of weight.
When gritty fantasy epic based on the legend of King Arthur starring Charlie Hunnam and Jude Law was announced with Ritchie at the helm, it got a number of people understandably excited.
Off the back of Hunnam's success in Sons of Anarchy, with the added bonus of other bankable stars such as Jude Law and Eric Bana, it certainly seemed to be a sure thing that the movie would find its audience without much difficulty.
With the potential to become a huge cinematic franchise, King Arthur: Legend of the Sword was released in 2017 to instant disappointment, with critics reportedly "warning audiences to stay away". Ouch.
It failed miserably to attract any real attention, and died a swift death, taking with it Ritchie's ridiculously optimistic plans of a six-film franchise.
It is estimated that King Arthur: Legend of the Sword lost the studio $150 million, which might go some way towards explaining the scale of its failure.