Windfarsm are a gross waste of money
I hear it costs a lot more to build and maintain a standard propeller-like wind turbine, for its limited lifespan, than the revenue generated by the turbine (given the narrow range of compatible wind speeds), so this looks like a gross waste of tax payers money. I doubt even much higher oil prices will even out the difference, because then Nuclear power becomes more economical.
... however ...
There are alternative turbine designs available, some of which can cope with a much wider range of speed winds, from any direction, without having to be braked, for high winds, these could be better for the variable wind conditions in the UK.
A key problem with electricity generating turbines, of all designs, is you can't just dump the raw electricity on the national grid, you have to synchronize the frequency, phase and voltage output, of the many wind turbines, to the national grid; crude power conversion solutions could waste massive amounts of power. A proper solution would probably need several power conversion stages, to inject power onto the grid, with minimal waste.
It may even be a better idea to have all the wind turbines drive gas, fluid or heat pumps, or even electrolysis cells, then drive a one or more regulated turbines off the stored energy, for the whole site, it could be a lot more efficient and reliable than electrical power converters in the turbines.