It'll be ok Dog but it ain't good for the car if you drive it hard, the valves etc work better with high octane fuel. It should be re-mapped specifically to run on better fuel too so you get the most out of it. I had a Leon Cupra R not so long ago and had a revo map put onto it, it made a massive difference to the performance although was quite aggressive.
What car have you got, if it's anything VAG take it to JKM in Portsmouth, their very good.