Bubble tea shops have become pretty ubiquitous in London in recent years. There must be hundreds of them across the city! There's one ('CUPP') opened up around the corner from me recently and there always seems to be a long queue outside in the evening, both regular customers and deliveroo riders picking up orders...
I wish CUPP had been around when I lived in Whitechapel! I used to have to walk all the way up Mile End for the Yi Fang stand (and sip it in the park!), or go to the shops in Shoreditch during work