We use Zoho CRM for our UK business however we want to add additional seats/licenses for our US clients to use. 

I understand this may be as simple as just purchasing additional licenses however I'm concerned about data on CRM being shared between the US/UK. I know some data will be fine to be viewed by both areas, but I'm assuming data regulations or specifically, the transfer of data between the US/UK could have issues we need to be aware of, and I don't know if that's something Zoho manages?