Humming/whining sound on acceleration -Audi A5 3.0 TDI

Hi guys

New to the Audi forum, even though I've had my car for about 8 years.

Had a lot of work done on it lately, including crank pulley, drive belt, water pump, coolant valve, etc. Car is in otherwise good working order and has clocked up 108k miles.

Last few days, I've noticed that when I accelerate (and ONLY when I accelerate), car is making an audible sound when I go past 20mph. Its not going into limp mode. It still pulls well and the revs go up as they should. The more I accelerate, the more this noise gets louder. The clutch doesn't feel too spongey or too firm. At a push, the accelerator pedal may be giving off a very subtle vibration - nothing major.

The best way I can describe the sound is like that of a sporty car with a loud exhaust when it is being driven fast. Like a loud whining sound? I have attached a clip that will hopefully be able to help.

My possible thoughts are either something to do with the turbo or the wheel bearing.

Many thanks in advance for anyone that recognises the issue.

Cheers, Oz

Edited 2 hours ago2 hr by Ozmeister
More info needed