Chris showed me this vase yesterday and I would agree with cameo. In this case a combination of acid to remove the larger areas and cutting for the detail. I thought it fine quality work, the layer of red glass seemed quite deep in comparison to other cameo work I have handled, there is a wide and shallow polished pontil mark.
I too thought English a fair bet, from what I have seen it did not strike me as typically French or for that matter Bohemian, especially given the subject matter. Chris, do you have a copy of Hadjamach's 19thC British glass? Just thought it might be useful here.
Lovely vase!
John