did you get anymore issues then mate or since your last post or is it been ok?
I purchased my Rs from Derby too in august 2015 the car is a 2014 plate been ok until last January where I started to have this ESC issue on the dash board and start hill issue too,spanner light on and the engine running on 3 cylinders.
I first took it to Pontifract Renault which is the nearest for me as I live in Doncaster,but I think they only reset the ecu cos few days after I had the same issue again.
I then decided to take it to Wakefield cos they are Renault sport specialist apparently but did same as ponty so I took it back in a 2nd time in Wakefield and this time they said they changed a cable because the fault was a misfire on cylinder 3,then the car has been ok since February until yesterday I got the same issue again.
I turned the car off for 5 minutes left the keys in the ignition and when I turned it back on everything was fine all lights gone off and engine running perfectly.
I wonder why the car has been ok all these months and now I'm having this issue again.
Could be because unfortunately I don't use the car every day? I only got the chance to use it at weekend but before yesterday last time I used it it was 3 weeks ago as I been away.