You must have 6 indicator lights altogether, 2 front, 2 rear and 2 side repeaters (yep, that would be 1 side repeater on each side)
They must be amber in colour
With all indicators working they must be capable of flashing between 60 and 120 flashes per minute. If your battery is low at the time of the test and it does not meet this requirement then they will carry out the test with the engine running (assuming they can start it with a low battery)
The car must be fitted with a ‘tell tale’ indicator. This can be an audio or visual (or both) indicator which informs the driver that the indicator is on. Interestingly if the offside and nearside indicators are visible to the driver from the drivers seat when operated then a tell tale indicator is not needed.
They must be positioned a minimum of 350mm from the ground to a maximum of 1500mm (2300mm in certain circumstances) - (measured to edge of light unit)
They must be E marked or be of equivalent standard.