I have the same problem with MG^ GT PetrolWas the problem you had the starter motor would not turn? That's the fault I have.
No problem with power, everything works fine except starting.
1- Key inserted, instrument sweep.
2- Clutch depressed
3- Push key to start, ""NOTHING"
Hi, I've just spent 30 Min, diagnosing the same problem with my 2015 DTi GT, with the RAC Man. Turned out to be the Stop/Start Relay in the Fuse Box behind the Battery, Relays do ware out! So I'm now looking for one and Hope a standard one from Halfords will do the Job.I have the same problem with MG^ GT Petrol
Has just started happening.... worked at the fifth attempt - but worried I will be let down when I am in a hurry!
Will check the pink wire...!