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Looking for this specifically
Minimum caffeine also
Artisan roast, this stuff is great. I've got a subscription for 1kg of this per month and 1kg of their Janzoon blend. So have full caf, decaf, and I grind a half and hand which is excellent
My local roastery, Owens Coffee, do an excellent swiss water decaf. Roasted in-house, organic and fairtrade certified too. https://owenscoffee.com/products/decaf
Not affiliated, just drink A LOT of their coffee!
Monsoon Estates. Both of these are good
Coffee's coffee.
Smith street coffee in Sheffield do a mountain water process decaf and the roaster will deliver to your door.
I use Pact, mainly as they were the best decaf option when I set up a subscription 8 years ago. I occasionally buy baga from a local roaster too.
Another vote for Rave here.
edit: moved to other thread as not decaf related.