Why did the Rotodyne project fail??

I was wondering why the Westland Rotodyne project failed. It seemed quite an interesting project…and also the prototype prooved itself. I found lack of funds stopped the project…but also it said the british government accepted it, but then withdrew from the project. Can any one shine a light on this….

First Flight : November 6, 1957

Engines: 2 * 2.800 hp Napier Eland NEL7
Cruise Speed: 300 km/h
Range: 700 km
Weight: Max: 14.900 Kgs
Rotor Span: 27.43 m
Length: 17.88 m
Height: 6.76 m
Disc Area: 591 m2

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