thanks to those who gave me a hand. I googled the ESP/BAS light staying on and it was because I had disconnected the earth to check the Relay control unit fault.
The fix was to turn the steering wheel to the centre then full left then full right. Light extinguished!!
Man this car has some unusual quirks lol.
Once before when the engine light came on it was suggested to remove and refit the petrol cap and it worked