Leaking onto exhaust, but where from?

[V8Bart]

Spotted some drips on the garage floor unfortunately. So had the best look underneath I can, confused with where it's coming from.

Parallel with the bell housing, dripping onto chassis rail and exhaust. Photo is as good as I could do. I've checked clutch and brake fluids so not them.? Gearbox oil?

Any ideas? Thanks.

[V8Bart]

The valley gasket is only a couple of years old, so fingers crossed it's the rocker cover.
will make my day if it is.

Thanks for the help.

[V8Bart]

Cheers guys, so bolts were loose on rocker cover. Tighten down and see how we go but looks good.