Before making an insurance claim you need to consider 4 main things.
What will the total cost of repairs be and how does it compare to the excess I will need to pay
Will the claim affect your ability to get insurance again
The impact is will have on the cost of future premiums
Will your no claims bonus be affected
REMEMBER: The damage includes not only repairing or replacing your car, but may also include the repair or replacement of any other vehicle or property damaged in the incident, depending on who is considered to be at fault (or partially at fault).