Go to the chrome menu > Bookmarks > Bookmark manager
2. Open the menu, and click 'Export bookmarks'
3. Save the File to your document's in the dialog box that pops up
Chromebooks: Save to the external USB Drive.
On chrome, Click your account button (the letter in a circle) on the chrome tool bar, just by the close button in the top right,
Add new account, or if you've added the account already, click your new '.uk' account.
Follow the steps in step 1 to open the bookmark manager on your new chrome profile
This time click 'Import bookmarks'
Select the HTML file that you created in the export step
NB: there is an “import bookmarks and settings…” option in the chrome menu, you could use instead, but be sure to change the dropdown to select html file.