Noise under dash

[497adam]

Got a strange noise under the dash on the drivers side, sounds a bit like a bird tweeting. Any ideas only thing I could think of is if one the air vents isn't shutting properly and is fluttering?

 

[McGherkin]

Recirculation flap?

 

[497adam]

That's just above the pedals isn't it? It does occasionally do its own thing but turning it on and off normally cures it. But this noise does sound in the dash to the right of the binacle

 

[497adam]

Might be travelling up though so will have a play