Dying from Breast Reduction - what are the risks?

I am 17 average weight, and have being approved for a breast reduction within the next year, now its 3am and im up searching death rates, I've quit smoking and as on nhs will have probably quit for a year before it happens, have had one surgery before under ga and one under la and was fine, it will be done with a consultant at a large teaching hospital, so honestly what are the risks.