Hi.Further investigation of oil loss has led to an area above where the oil filter sits,what could be the cause.Many thanks in advance

 

Area above the oil filter is the oil cooler.I think there is a hose connection to the cooler but I think that's the coolant hose.Guess you have to look at that area with the help of a torch light and a inspection mirror to see where the oil is coming from.
Hope this help.
Chan

 

Sounds like it could be the front crank seal.