Land Rover Repair: 2012 defender service light reset

Question
please can you tell me how to turn off oil service light on my 2012 defender

Answer
Here in the United States service reminder lights are turned off through the factory test system.  However, we don't have Defenders in America and I actually do not know if your system is different.  Sorry I can't answer. Last time they sold Defender here was 1997, and they had a totally different system then