If you're interested in birth options post CS then head to the VBAC thread linked in my siggy.
Its aimed at VBAC but all the info/stats are relevant to making a decision.
If you have had 1 CS with a lower segment (bikini cut) then the risk of Uterine rupture is stated to be around 0.05% and occurring in active labour - as this is when contractions are strongest in the lower part of the uterus that could cause rupture...remember that risk is INCREDIBLY low.
That stat is made up of data from ALL UR's not just full catastrophic rupture with baby leaving the uterus into the abdomen but and and every degree of rupture and stretching of the scar...the vast majority of 'ruptures' are not life threatening.
There are usually warning signs to rupture in mother and baby and if you have a competent MW and you are labouring well in your own environment and able to listen to your body (so not in a brightly lit room in stirrups on your back covered in monitors with drips in your arms ) you and you MW will notice the signs and get you to theatre before there is a real problem.