Gordon Street Coffee at Glasgow Central - alas I don't expect they'll be open again any time soon. At Queen Street, 92 Degrees is the best of the three independent stalls.
In my former East London haunts, Perky Blenders at Walthamstow Central and Leyton Midland Road. (They also have kiosks at Leytonstone and Finchley Road tube stations)
In my former East London haunts, Perky Blenders at Walthamstow Central and Leyton Midland Road. (They also have kiosks at Leytonstone and Finchley Road tube stations)