OIL LEAK S1 eXige

Got home from a wonderful day at Silverstone to find a serious oil leak from the gearbox side of the engine.
seems to be engine oil but the source is not obvious.
Filter and all pipes seem tight.
any body any idea what it could be ??

If its gearbox to block where it leaks its the crank main seal and somewhat common problem …

Agreed, prob. crank oil seal.