Wind speed measurement services; wind speed measurement services using laser anemometers; services for the rental of laser anemometers; laser anemometry services; laser Doppler anemometry services; laser Doppler velocimetry (LDV) services; services using laser radars (lidars) for acquiring wind speed measurements; services for acquiring wind speed measurements using lasers; services for acquiring wind speed measurements for optical fibre based laser anemometers; services for acquiring wind speed measurements using apparatus comprising a source of infra-red (IR) radiation; services for the rental of ground based laser anemometers; services for the rental of vehicle mounted laser anemometers; services for the rental of buoy mounted laser anemometers; services for the rental of ship mounted laser anemometers; services for the rental of wind turbine mounted laser anemometers; services for the rental of aircraft mounted laser anemometers; services for the rental of laser anemometers for measuring wind speed in a wind tunnel; services for testing, evaluating or measuring using ground based laser anemometers; services for testing, evaluating or measuring using vehicle mounted laser anemometers; services for testing, evaluating or measuring using buoy mounted laser anemometers; services for testing, evaluating or measuring using ship mounted laser anemometers; services for testing, evaluating or measuring using wind turbine mounted laser anemometers; services for testing, evaluating or measuring using aircraft mounted laser anemometers; services for testing, evaluating or measuring using laser anemometers for measuring wind speed in a wind tunnel; services for measuring air turbulence using laser anemometers; services for measuring true air speed using laser anemometers