I'm not sure the posting rules allow me to give a link to a postcard on a certain well-known auction site, but if you put 351925568618 in its search box or search for Glengall Road and select the right one, you'll see a view which I've concluded looks south down the road from where the canal crosses towards the Derwent Tavern and may even show it.
Nitty-gritty: From the "Post Office London County Suburbs Directory, 1919" on the Leicester University historical directories site the building with sign "Bennet's" on the near left (east side) is Bennet's Furnishing which had Nos 47 & 55, but the one on the corner of a road (Bianca Rd) is No 47. In the distance on the same side is St Andrew's Church, which is now the Celestial Church of Christ and has lost its spire.
I think the road on the near right (west side) is the entrance to Camberwell Borough Depot and/or the canal towpath. The terrace of houses is followed by various businesses, Nos 80-92, then Colegrove Road and immediately after it Derwent Tavern. It's just possible this is the building with a little dome on the roof, but I rather fear it's behind the tree.
Take all of the above with a very large pinch of salt. There may be writing or a pub sign on the domed building, but I can't make it out on the thumbnail. This isn't a cheap card, so you won't want to buy it to see, though you could ask the seller.
If no one else come up with anything, I suggest keeping an eye on auction sites and see if a better card appears. I will also look for one at postcard fairs, but be very very patient and save up your pennies. Cards other than main roads don't turn up very often and tend to be priced accordingly.
