The Ouse viaduct is a great spot but a bit of a warning. I was there a couple of weeks ago and clearly the farmer / locals are a bit fed up with drones as you can see from the sign below.
There is a field with footpath on the other side of the road which is where I flew from. No signs! You need to be at that distance to get the whole viaduct in. By the way, there are loads of trains using the viaduct (at least every 10 minutes) so if you want a shot with a train you don’t need to wait long.
I know the farmer cannot stop you flying over the field, as long as in the drone code, but I just wasn’t interested in the hassle as there are houses very close.
Do make sure you go on the footpath under the viaduct with your camera, as the arches make for Some great shots.