As a long time fan of Emperor's Choice I feel I should weigh in on this subject.
I've studied the ingredient list above and done a few experiments and this is the recipe I think has the closest taste. Your mileage may vary.
Emperor's Choice is basically a spiced chai with ginseng it seems...
To bring it back from the dead just use an Earl Grey tea bag, best quality you can find, add to that in the cup a 1/2 tsp of instant chicory, 1/4 tsp of cinnamon, 1/4 tsp ground ginger and a gold sachet of instant ginseng tea. Add sugar/sweetener and milk if you usually have them.
This is pretty close to my beloved and sorely missed brew.