Thank you so much for your help, it has really helped me get started with this 
I did reply before but my comment didn’t seem to appear.
I used the info you have given and I have managed to get the coin to roll in a more realistic fashion (I don’t need hyper realistic, just a good simulation).
The issue that I am having now is due to friction. The coin is slowing down too quick. If I place a sphere the ball rolls indefinitely, however even with a linear and angular friction of 0, the coin still slows down really fast and then falls over.
I need the coin to roll until it either becomes unstable or hits something, do you know where I could be going wrong?
Thanks again.