I suppose you could blame it on the decline of empire or the rise of American hegemony but I suspect a more specific cause for the loss of footing experienced since the heady golden years at Ealing and Elstree.
Is it perhaps just the films that are made?
Is it perhaps just a lack of confidence to make the big films?
After all, the big films get made here with UK crew.
Why are so many of them made by American companies?
What has changed and how can we change it back?