I've have got an oil leak on my defender 200 tdi..

I've replaced the cam and crank oil seal....

Still a constant drip from wading plug

Engine running with cover off oil appeared to be running out the tensioner bolt hole...

Timing casing off, looks like it's running out of the the screw above the cam shaft..

Cleaned it all put it back together run it.. Leak.. Check again.. Still appears to be running out of this screw in block..

Has anyone suffered this problem... And can anyone advise the best way to address this... Is it a simple case of lock tight the screw in, or is it something more..?