my hand brake light switch is flashing on and off brake fluid ok any ideas

Front pads low? Not sure if its the handbrake light that warns you of this but you will have a sensor in the front nearside inside pad and you get a warning on the dash when they're getting thin (check the manual and see if it is definately the handbrake light that does this)

Otherwise it could just be a faulty switch, there's a switch on the handbrake mechanism under the centre trim between the front seats.

Don't think that's the right light m8, the low pad is yellow and gives a beep.

Usually when I leave the hand brake on the red light flashes but also gives a beep

its a red light defo handbrake light