<p>The Home Office does not collect or store data on the number of overseas nationals working under the concession in the offshore wind farm industry in the UK from 2017 to date.</p><p>All concessions are temporary and are only put in place in exceptional circumstances. The Government regularly reviews all concessions to the Immigration Rules against the general principles of the immigration system to check whether they are necessary and regularly undertakes engagement with a wide range of stakeholders. This will continue to be the case in future.</p>