I love and consume coffee more than an average person should. So here are some recommendations.
Manchester:
TAKK - right at the campus of Economics at University of Manchester and they are amazing.
Siop Shop (Northern Quarter) - They have the best donuts and coffee combo in town.
Idle Hands - Their coffee is as cool as their name.
London
Flow Coffee - Top notch pourover coffees
Nostos Coffee - They source the best coffees from all over Europe and do really great SOEs. My personal favourite.
Qima Coffee - Specialises in Yemen and Colombia coffees
Redemption Roasters - the world’s first behind bars coffee company with a noble mission to reduce re-offending rates through coffee and yes, your coffee will be socially impactful and delicious.
Assembly Coffee Roasters - the one that keeps pushing the boundaries of coffee-making.
There's many more great ones in London: Origin, Ozone, Old Spike, Gentleman Baristas...
Paris
Substance - An interactive cafe, the owner will present the coffee and brewing to you with 100% passion. The best in Paris.
Kawa Coffee - They use very high quality beans from all over the globe.
Rest of Europe & Asia
The Barn (Berlin)
MOK (Brussels)
Drop Coffee (Stockholm)
Gardelli Specialty Coffees (Forlì)
Solberg & Hansen (Oslo)
Nylon (Singapore) - Personal favourite!!
Seesaw Coffee (Shanghai)
Apollon's Gold (Tokyo)
Also a guide to speciality coffee: European Coffee Trip