Vauxhall Insignia intermittent squeaking noise

2011 plate , 101,000, 2.0 cdti . It’s just had new clutch and flywheel , new cambelt , new discs and pads rear and front ones were fine a few 1000 miles ago


Car is making a intermittent squeaking noise .. sounds like a mouse in the car.. had rear discs and pads replaced today , front brakes cleaned up and re-grease but it’s still doing it , thought it might be the belt but that’s not long been replaced but they put some conditioner stuff on it and ITS STILL SQUEAKING FROM SOMEWHERE


Any help and advice greatly appreciated

Thank you in advance