This was my reply on a recent thread
"The course fee clause will be very black and white and is standard for most employers, and only fair really. So if they pay for a course and you leave within 6 months of completeing that couse you owe them 50% of he course fees. If you think it might be on the cards ask before attending any course what the cost is. To be honest if you refused to pay they would have to issue a county court proceeding against you, which would only be a black mark if you refused to cough up.
The radius bit isn't so black and white and again to enforce it they would have to take you to court for damages. They would have to prove that they had lost income by you poaching clients from their salon, but even if clients did transfer to you most courts don't uphold it because you can't prevent someone from earning a living, and if that is what you are trained in then obviously that is what you are going to do. Although if it's 1.5 miles or km it's not hugely prohibitive, where as if it was say 15 miles then it would be seen as unreasonable.
But as I said most employers rarely take action to start with. "
Obviously the training bit is not relevant to you but the radius clause is.
Basically their clause has to be reasonable and cannot prevent you from earning a living. They would have to prove that they have suffered damages as a result of you working in your new salon etc. etc. it is highly unlikely that the costs incurred would be worth it, and even more unlikely that a judjement would go in their favour, especially if they are the 'big boys' with 2 salons in town!