ICO advises companies on how to prepare for a possible no-deal Brexit
The ICO recommends steps that companies could take now to start preparing for data protection compliance if the UK leaves the EU on 29 March 2019 without a deal.
If the UK is currently your organisation’s lead supervisory authority, you should review the structure of your European operations to assess whether you will continue to be able to have a lead authority and benefit from the One-Stop-Shop, the ICO says.
Source: ICO advises companies on how to prepare for a possible no-deal Brexit – Privacy Laws & Business