Got myself a rattle!

Hi guy/girls (what ever I’m allowed to call people these days)

My VRS has developed a rattle while idle, if I blip the throttle the rattle goes, and if I switch the air-con on it goes also.

Now the sarcastic among you may say, leave the air-con on and never idle.

But this is the modern world ans most of us sit in traffic on a commute.

I’ve had my ear all over the car inside and out I hear the noise more from the drivers side in the footwell, the screw are all tight and I’ve done the usual pressing on panels etc.

it sounds to me like a fan. Knocking against something.

I spoke to my local garage yesterday and they said pop it in later afternoon and they’d have a look and give it a test drive. Inexplicably when I took it down to them, the noise stopped, but this morning it’s back!

I’ve attached a video also.

Any ideas, greatly appreciated.