Reading the Fairtrade Foundation's newsletter, I noticed
All espresso-based drinks sold in Starbucks in the UK are Ireland are now Fairtrade.
Good news! I can now relax my boycott of Starbucks ... though I still will prefer to find independent coffee shops, as the taste is likely to be better. Not that I'm often in a coffee shop other than the one at work. It also notes that Morrisons' ground and roast coffee is also all now Fairtrade. Good for them too, but there's no Morrisons near us.