EA
I'm quoting directly from the "law" (or the AIP anyway). The 1000 feet ceiling/1800m RVR is, I understand, for single-engined PT Ops. I didn't look for it elsewhere since it was stated in the UKAIP at AD 1.1 Section 4.
If you took off from Edinburgh in a single, non-PT, with 750m RVR, you were legal. Likewise if PT but in a twin. If it was PT and a single, I fear you might not have been.
Will
Quite - but being sneaky, I was using the UKAIM which reproduces verbatim the "law".
Yes, 150m is the lowest minimum on the page and requires a full kit of lighting etc.
I didn't look up the US equivalent rules - it's all in the FAR.AIM for them as wants it.