Top side oil leak

[Apeers]

My 2015 Tourneo has developed an oil leak noticed after towing my caravan back from holiday it smelt hot. Went out this morning to see a decent coverage of oil on the floor.

Upon looking this evening the top of the rocker cover has a decent splashing of oil which is also on the engine cover.
My guess would be either 2 things injector seals but the oil doesn’t smell like diesel even the spillage on top, or rocker cover breather. Thoughts?

I’ve got to go leicester to Cambridge at the weekend and back again, light loaded van not towing . think it’s risky? Or top the oil up and it will be ok till I can get time to sort it the weekend after.