Yes, in the UK, speed cameras are typically required to be yellow. The use of yellow color is to make them easily visible to drivers and to serve as a warning that speed enforcement is in operation. The bright yellow color helps to ensure that drivers can spot the cameras from a distance and adjust their speed accordingly. However, it's worth noting that there may be variations in camera design and color depending on specific locations or circumstances. It's always advisable to follow the relevant traffic laws and regulations in the area where you are driving.