Practices with outposts in other European Union countries – or which provide services to most of the other 27 nations – have been given updated guidance from the RIBA on how they should prepare for a no-deal Brexit.

The UK is due to leave the EU in just 145 days, and the RIBA said members and firms need to be aware of the “significant implications” that will follow if an exit deal cannot be negotiated before the March 29 deadline.

It said a failure to agree a deal in time would mean there would be no 21-month transition period to ease the UK’s departure and practices that have staff with EU passports should prepare, as should those with EU subsidiary companies and those that do any other business with the other 27 states.

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