if you go from Redcliffe Way, up Pump Lane (cobbled, next to church), then you come to a "weak bridge". on your left is the cutting, with a brick wall separating the remaining triangular section of trackbed from the back garden of what i think is a block of flats called Townsend House, whose entrance is on the left, halfway up Pump Lane before the bridge. If you can get into the garden you should be able to get great pictures.
Alternatively, on the other side of the bridge, there is a line of temporary fencing like you find on building sites, and strangely, sets of metal stairs going down the side of the cutting to the trackbed. I wasn't going to risk it, but it should be easy to squeeze past
The tunnel mouth is bricked up, but there appears to be a window or some opening...it's a little hard to see from on top of the cutting!
Something strange I noticed about the bridge: On the west side (right when facing up the hill), you can clearly see a small section of the top of a brick arch in the stone wall, as if the bridge was built later, and butted up against the existing tunnel mouth and wall, instead of building a new parapet.
Wish I'd taken pictures now, but hey, that's your job
