Hi Nadine
Welcome to Minis.
I wish I could be more specific regarding nhs waiting times but unfortunately it's almost like asking how long is a piece of string. There are a lot of things to take into consideration, your pct, your health issues, the hospital, the list goes on. I would say as a rough estimate do not expect the operation to happen for at the minimum 6 months and know that in some cases it can take much much longer than this.
I am sure someone will be along soon who has been to the same hospital as you are attending or is under the same pct to help a bit more.
The only advice I can give you is, try not to stress, hopefully your road will be smooth. sometimes though there are a few potholes to overcome, take them all in your stride and focus on the end goal, you will get there.
Good luck on your journey.
Xx