Hi, I'm in the UK and I love English/Irish blends.
If your friends live either in Norwich or Southsea there a couple of good vendors I can recommend, they are mainly wholesalers that supply tea rooms (they have websites but I can't recommend buying online as I'm not sure their customer service is reliable, also they don't always give enough information about their teas to know exactly what you are buying). If I lived in one of those towns myself I'd probably visit every other day...
The one in Norwich do some interesting Earl Grey blends:
Earl Grey Green: Pure green China tea and bergamot
Earl's Passion: Early Grey with a twist!
Earl Grey Fumé: China black and green, Bergamot and a hint of lapsang
Blue Lady Earl Grey: Wonderfully aromatic, soft and fruity and floral infusion. (just earl grey with added cornflowers, just pretty but same taste)
Blue Lady Grapefruit: Earl Grey with a most refreshing zing of grapefruit.
Lady in waiting Earl Grey: Earl grey with added orange oil and zest, double citrus!
If your friend is offering to buy some tea in her local supermarket, in my opinion Yorkshire Tea by Taylors of Harrogate is the best you can find in a shop particularly Yorkshire Gold (bags and loose). It's a fairly strong classic English blend. Obviously it wouldn't be my first recommendation, but it's the only supermarket tea I would buy. I don't know if it's available in USA, probably not.
I hope this helps.