FCPEuro does sell BMW 0w20 in case you're interestedBecause there are very few LL14FE or LL17FE oils in the aftermarket, so they have to try and sell something I guess. My sister's Mini I had to use Total Ineo Dynamics 0w20 but outside of that it would have been a trip to the dealer probably. I think LM is coming with one soon too.
https://www.fcpeuro.com/products/bmw-0w20-ll-14fe-engine-oil-1-liter-genuine-bmw-83212365954