This was quite inspirational. I was going to make your cocktail of the day for the anniversary of the Great Fire, but instead made this, but wanted to make it more like a Wormwood ale so added absinthe and cardamom bitters to a Samuel Smith pale ale. I called that cocktail a London Purl.
If interested, here's the link to the video: https://youtu.be/Xcl3G__pkqM
Richard, I just made your recipe with Ransom Old Tom Gin, Dogfish Head 60 Min IPA (essentially a strong bitter), and some Bokers Bitters and it was quite fantastic. I must admit I have a bitter tooth... I will try it again with what you used. Great inspiration. Well done.
If interested, here's the link to the video: https://youtu.be/Xcl3G__pkqM