Time to diagnose an Oil Leak

[Sir WIll]

Gents,

Some of your wisdom if I may, I have been reading all the Oil Leak Threads and just need your thoughts.

I have a small oil leak, nothing major but the odd spot on the drive.

Its very hard to see where it is coming from, I cannot see anything from above and the cam covers look OK.

The leak is causing the sub frame behind the under tray on the drivers side to have oil on the inside of it and run down and hence the drips. So its rear of the engine, right of the gearbox and on the drivers side around where a couple of bolts are on the rear part of the sub frame.

Any thoughts? Oil Cooler/ Breather pipes?

Rack looks OK and not leaking.