106 on a mixed passenger train, the driver is about to hand over the single line staff. The second coach appears to be a very long LNWR brake. No details of the location are available but it is likely to be in the Midlands. Can anyone help?

Phil Barry says "Looking at the mountains behind it could be Cefn Coed on the Merthyr, Tredegar and Abergavenny line. The class 3MT's arrived in the late 30's and stayed for twenty years. Loco would have been shedded at at Tredegar or Abergavenny "