Hong Kong's ambition to become a hub for green and sustainable business is under threat as the city persists with stringent Covid-19 border controls, making it tougher for financial institutions to attract sector specialists.

Bankers and advisers said the risks of Beijing's "zero-Covid" policy, which has already led to a broader talent crunch in the Chinese territory, are growing as most other countries significantly ease restrictions introduced to fight the coronavirus pandemic.

Flight bans, lengthy and costly quarantine requirements, limited access to public services and the threat of families being separated should one member test positive for the virus have all spooked potential talent.

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