Take everything into consideration,how much would it cost to have the other car repaired? What is the excess that you would have to pay under your Insurance? Do you loose any non claim bonus? Many Things to consider, as far as your own car goes, get a quote from a car repair garage,sometimes it pays to go down the road of you paying for the other persons damage,you just have to weigh all thing up.Good Luck. Also take into consideration that if you do not have protected non claim bonus your insurance premium will rise next year