Coworking is one of the most controversial topics in global real estate circles. Coworking spaces in London are accounting for between 10-20% of leasing activity. We Work, now London’s largest private tenant, has a valuation larger than any office REIT. But, where will the model expand next in Europe and what does it mean for traditional office space? Cushman & Wakefield's latest European Coworking Hotspot Index looks at where next for this quickly evolving market segment.