Almost half of all architects working in London come from overseas, according to a survey of practices conducted for Dezeen.
The figures highlight the extent to which the architecture sector in the capital relies on foreign workers, with practices expressing fears over the implications of the Brexit vote on overseas staff.
"We rely heavily on recruiting from within the EU so there is a natural concern about how new working restrictions may affect our staff," one of the surveyed practices said. "Many EU employees are frantically trying to apply for UK citizenship as they are so concerned about their future status."
The survey, conducted for Dezeen by a network of human resources professionals working in the sector, gathered data from 20 small- and medium-sized firms around the UK, including 13 in London. It found that 33 percent of architects in London firms come from either the European Union (EU), the European Economic Area (EEA) or Switzerland.
A further 12 per cent come from other countries. In total 45 per cent hail from abroad. Among London firms surveyed, the number of overseas architects is as high as 80 per cent.

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Outside London, the number of overseas architects is lower, with 20 per cent coming from European countries and a further three per cent coming from elsewhere.
The non-London firm...