Oil Leak!

Hi, I could do with some help having just bought a new radiator and re-charged the Air Con which was enough! I now seem to have an oil leak from the front of the car it seems to be worse under pressure or after a long run it's hard to identify where it is coming from exactly but it seems to be worse just behind the Radiator. I recently had to replace a turbo intercooler hose pipe and clips and when the accelerator is quickly released when whilst running the engine fault symbol comes up on the dash for a second and then vanishes!.
I also recently pulled out a long thin metal strip/clip from around this area on the car the other day!, i'm not sure if this was off the car or if it got picked up from the road (unlikely i know).

I would really appreciate any help or guidance

Thanks
Paul

The banding looks like pallet banding, could have come from anywhere, loads of it used where you have duct laying or road works. Might be coincidental but there is a chance it might have nicked an oil cooler or oil pipe. It will leak more when hot than cold as the viscosity gets lower as it gets hotter.
I suggest you steam wash area to try and find where the leak is comming from. Start with where you pulled the banding from.

Thanks, I will, try probably best to take the tray off to inspect it.