Freelander Fluid Leak

Hi

I own a an X reg Freelander Xedi, which has recently developed a fluid leak, from the passenger side about 9inches back from the bottom of the radiator, Having looked I cant see anything majorly wrong, Oil Levels are Fine in the main sump, and car is not overheating so i'd guess that rules coolant out, The fluid has a slight smell of diesel, and a black oil look, however im guessing this is washing back from the bed plate

Any Ideas???