Traffic passes around the Old Street roundabout, also referred to as 'Silicon Roundabout,' in the area known as 'Tech City' at dusk in London, UK. Photo: Chris Ratcliffe/Bloomberg/Getty Images

London overtakes San Francisco as the most expensive city for tech start-ups

‘London needs to be more affordable for tech firms if it wants a home-grown Google or Twitter,’ say estate agents

Topic |   CNBC

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Traffic passes around the Old Street roundabout, also referred to as 'Silicon Roundabout,' in the area known as 'Tech City' at dusk in London, UK. Photo: Chris Ratcliffe/Bloomberg/Getty Images
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