Since 1997, HSE is aware of two fatalities related to the operation of the UK's wind energy industry. In Scotland in May 2007, a construction worker fell from height inside a wind turbine tower; and in Wales in March 2008 a worker who struck by a moving vehicle on a wind farm access road.
HSE is not the regulator for Northern Ireland (NI) but I am advised that there have been no fatalities related to wind turbines in NI since 1997.