Hi Wayne. Yard is east of Didcot on the north side of railway. You'll see some from train but unless you have a car it's a fairly long walk - and one that doesn't have pavement in parts. If you are in car there is a lay-by near new road bridge. You can see a lot from this bridge but if you want more it's a case of walking edge of muddy fields either side! Doing this you'll pretty much see everything.

There's also a farm track further east that has a bridge over the line at the opposite end of yard so starting there (in car) is another option but probably more walking along edge of fields from here...