Thanks everyone. Really helpful.
I also have squeaky brakes on manoeuvring the car out to drive.
Have had handbrake fixed recently.
Also just fitted front splitter and side skirts.
There is definitely more volume when driving.
Think it's maybe down to more wind noise caused by the splitter and skirts.
Just eliminating any possible causes.
Its logical it could be this but hasn't happened to such a degree with previous cars.