The firm said it would start a phased opening and would operate at reduced capacity over the coming weeks to ensure its workforce adhered to the recommended site operating procedures enforcing social distancing.

“The government has made it clear that the construction industry plays a vital role in supporting the UK economy and that, where we are confident we can safely operate our sites, we should do so,” said a spokesman

“Safety remains our priority. We have been working in close collaboration with our staff, supply chain and clients to ensure work can continue safely.

“Having closed all Bouygues UK sites   – except critical healthcare projects – on 27 March, we have extensively reviewed the site operating procedures published by the Construction Leadership Council, and aligned with the latest guidance from Public Health England, to implement the recommended procedures for our sites to operate safely in the current COVID-19 environment.

“In agreement with our clients and supply chain, we have decided to re-open our sites from 20 April.”