Rachel
I don't post here very often and have not done any training outside the UK.
I would suggest to you that you will find a PPL training course in any country demanding. If you can get the standard you want outside the UK, at a cost that you can afford, do so by all means.
But remember that you will be flying in the UK (I assume).
The weather is unique and flying in the south of England is also very challenging with interesting airspace to say the least.
You will need some sort of training when you return to the UK. I would hate for you to become a statistic.
I hope you enjoy the course, it will be hard work.
Mike