Europe's technology sector begins to feel Silicon Valley's woes

London

AT the offices of Deliveroo, a food delivery startup with headquarters in an upmarket neighbourhood here, signs of activity are everywhere. The communal kitchen hums with 20-

something developers. A gold-painted scooter, which co-founder William Shu once used to make deliveries, stands in the centre of the office as people bustle about.

The frenetic pace belies a…