Sevenoaks, located in the South East of England, is generally considered a safe destination for solo female travelers. The crime rate is relatively low compared to other UK cities. However, as in any location in the world, it is important to remain aware of one's surroundings, especially when traveling alone. Don't walk alone late at night in less populated areas and keep your valuables well secured. There's always a slight risk but you shouldn't encounter any significant issues in Sevenoaks.