engine oil leak ! turbo??

Hi folks,
I have a k9k engine 1.5 dci which I believe was developed between both Nissan and Renault and I have a problem I'm hoping you might be able to help me with please?

As you can see from the pics the oil seems to be congregating around the throttle body with the resulting blue smoke from the exhaust.
I have checked and cleaned the egr valve and it all seemed good.
Fresh oil is evident in the small bore pipe that connects onto the main pipe from the air filter , just after the maf, to the top of the head.
Oil is also evident further down the pipe off of the turbo , in pic ,
Anybody seen this before?

Thanks folks
Stuart

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engine oil leak ! turbo??